Langbahn Team – Weltmeisterschaft

2024 in arthropod paleontology

2024 in arthropod paleontology is a list of new arthropod fossil taxa, including arachnids, crustaceans, trilobites, and other arthropods (except insects, which have their own list) that were announced or described, as well as other significant arthropod paleontological discoveries and events which occurred in 2024.

List of years in arthropod paleontology
In paleontology
2021
2022
2023
2024
2025
2026
2027
In science
2021
2022
2023
2024
2025
2026
2027
In reptile paleontology
2021
2022
2023
2024
2025
2026
2027
In paleobotany
2021
2022
2023
2024
2025
2026
2027
In paleoentomology
2021
2022
2023
2024
2025
2026
2027
In paleomalacology
2021
2022
2023
2024
2025
2026
2027
In archosaur paleontology
2021
2022
2023
2024
2025
2026
2027
In paleomammalogy
2021
2022
2023
2024
2025
2026
2027
In paleoichthyology
2021
2022
2023
2024
2025
2026
2027

Chelicerates

Arachnids

Araneae

Name Novelty Status Authors Age Type locality Country Notes Images

Acanthomacrothele[1]

Gen. et 3 sp. nov

Wang et al.

Cretaceous

Burmese amber

 Myanmar

A member of the family Macrothelidae. Genus includes new species A. pauciverrucae, A. geminata and A. longicaudata.

Anameta tertia[2]

Sp. nov

Valid

Wunderlich

Eocene

Baltic amber

Europe (Baltic Sea region)

A possible long-jawed orb weaver.

?Bararaneus rotundus[2]

Sp. nov

Valid

Wunderlich

Eocene

Baltic amber

Europe (Baltic Sea region)

An orb-weaver spider. The spelling ?Baltaraneus rotundus is used in the paper naming it, but the discussion of its relationships tentatively refers it to the genus Bararaneus.[2]

Breviscauda[3]

Gen. et sp. nov

Valid

Wunderlich

Cretaceous

Burmese amber

 Myanmar

A tree trunk spider. The type species is B. translucens.

Lineaburmops longiantepes[4]

Sp. nov

Guo, Selden & Ren in Guo et al.

Late Cretaceous (Cenomanian)

Burmese amber

 Myanmar

A spider belonging to the family Lagonomegopidae.

Lineaburmops rhombus[4]

Sp. nov

Guo et al.

Late Cretaceous (Cenomanian)

Burmese amber

 Myanmar

A spider belonging to the family Lagonomegopidae.

Longissipalpus albistriatus[5]

Sp. nov

Valid

Hou et al.

Cretaceous

Burmese amber

 Myanmar

A spider belonging to the family Pholcochyroceridae.

Mengesilia[2]

Gen. et sp. nov

Valid

Wunderlich

Eocene

Rovno amber

 Ukraine

A tree trunk spider. The type species is M. rovnoensis.

Myrmarachne colombiana[6]

Sp.nov

Poinar

Quaternary

Colombian Amber

 Colombia

An ant-mimick spider. Originally described as a species of Myrmarachne; Perger (2024) transferred it to the genus Myrmecium.[7]

Parvosegestria elegans[3]

Sp. nov

Valid

Wunderlich

Cretaceous

Burmese amber

 Myanmar

A possible tube-dwelling spider.

Pedipalparaneus protumidus[5]

Sp. nov

Valid

Hou et al.

Cretaceous

Burmese amber

 Myanmar

A spider belonging to the family Pholcochyroceridae.

Pholcophora gregorioi[8]

Sp. nov

García-Villafuerte, Carbot-Chanona & Gómez-Pérez

Miocene

Mexican amber

 Mexico

A species of Pholcophora.

Araneological research
  • Córdova-Tabares et al. (2024) describe a sac spider specimen from the Mexican amber preserved with an ant belonging to the genus Azteca, providing evidence of a fossil spider showing trapping and feeding behavior seen also in its extant relatives.[9]

Ixodida

Name Novelty Status Authors Age Type locality Country Notes Images

Deinocroton bicornis[10]

Sp. nov

Valid

Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A tick belonging to the family Nuttalliellidae.

Deinocroton lacrimus[10]

Sp. nov

Valid

Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A tick belonging to the family Nuttalliellidae.

Legionaris[10]

Gen. et sp. nov

Valid

Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A tick belonging to the family Nuttalliellidae. The type species is L. robustus.

Nuttalliella gratae[10]

Sp. nov

Valid

Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A species of Nuttalliella.

Nuttalliella odyssea[10]

Sp. nov

Valid

Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A species of Nuttalliella.

Nuttalliella placaventrala[10]

Sp. nov

Valid

Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A species of Nuttalliella.

Nuttalliella tropicasylvae[10]

Sp. nov

Valid

Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A species of Nuttalliella.

Nuttalliella tuberculata[10]

Sp. nov

Valid

Chitimia-Dobler, Dunlop & Mans in Chitimia-Dobler et al.

Cretaceous

Burmese amber

 Myanmar

A species of Nuttalliella.

Opiliones

Name Novelty Status Authors Age Type locality Country Notes Images

?Leiobunum messelense[11]

Sp. nov

Valid

Bartel, Dunlop & Wedmann

Eocene

Messel pit

 Germany

Possibly a species of Leiobunum.

?Leiobunum schaali[11]

Sp. nov

Valid

Bartel, Dunlop & Wedmann

Eocene

Messel pit

 Germany

Possibly a species of Leiobunum.

Opiliones research
  • Gainett et al. (2024) report that extant daddy longlegs have six eyes, including four vestigial ones, and reevaluate the affinities of fossil members of Opiliones with four eyes, resulting in older estimated ages of harvestman diversification.[12]

Pseudoscorpiones

Name Novelty Status Authors Age Type locality Country Notes Images

Cretogarypinus[13]

Gen. et sp. nov

Valid

Sánchez-García et al.

Early Cretaceous (Albian)

Escucha Formation

 Spain

A member of the family Garypinidae. The type species is C. zaragozai.

Geogaranya[14]

Gen. et sp. nov

Valid

Agnihotri et al.

Eocene

Cambay Basin

 India

A member of the family Geogarypidae. The type species is G. valiyaensis.

Hya fynni[15]

Sp. nov

Valid

Röschmann et al.

Late Cretaceous (Cenomanian)

Burmese amber

 Myanmar

A member of the family Hyidae.

Hysterochelifer manpauch[16]

Sp. nov

Córdova-Tabares et al.

Miocene

Mexican amber

 Mexico

A member of the family Cheliferidae.

Ithioreolpium[13]

Gen. et sp. nov

Valid

Sánchez-García et al.

Early Cretaceous (Albian)

Escucha Formation

 Spain

A member of the family Garypinidae. The type species is I. alavensis.

Sarcoptiformes

Name Novelty Status Authors Age Type locality Country Notes Images

Collohmannia albertii[17]

Sp. nov

Valid

Kolesnikov, Vorontsov & Sidorchuk

Eocene

Baltic amber

Europe (Baltic Sea region)

A member of Oribatida belonging to the family Collohmanniidae.

Collohmannia clavata[17]

Sp. nov

Valid

Kolesnikov, Vorontsov & Sidorchuk

Eocene

Baltic amber

Europe (Baltic Sea region)

A member of Oribatida belonging to the family Collohmanniidae.

Collohmannia groehni[17]

Sp. nov

Valid

Kolesnikov, Vorontsov & Sidorchuk

Eocene

Baltic amber

Europe (Baltic Sea region)

A member of Oribatida belonging to the family Collohmanniidae.

Collohmannia kerneggeri[17]

Sp. nov

Valid

Kolesnikov, Vorontsov & Sidorchuk

Eocene

Baltic amber

Europe (Baltic Sea region)

A member of Oribatida belonging to the family Collohmanniidae.

Collohmannia nortoni[17]

Sp. nov

Valid

Kolesnikov, Vorontsov & Sidorchuk

Eocene

Baltic amber

Europe (Baltic Sea region)

A member of Oribatida belonging to the family Collohmanniidae.

Collohmannia sellnicki[17]

Sp. nov

Valid

Kolesnikov, Vorontsov & Sidorchuk

Eocene

Baltic amber

Europe (Baltic Sea region)

A member of Oribatida belonging to the family Collohmanniidae.

Collohmannia weiterschani[17]

Sp. nov

Valid

Kolesnikov, Vorontsov & Sidorchuk

Eocene

Baltic amber

Europe (Baltic Sea region)

A member of Oribatida belonging to the family Collohmanniidae.

Schizomida

Schizomid research
  • A study on changes of body size and shape diversity of male flagella in Schizomida throughout their evolutionary history is published by Belojević et al. (2024).[18]

Scorpiones

Name Novelty Status Authors Age Type locality Country Notes Images

Betaburmesebuthus thomasvelteni[19]

Sp. nov

Valid

Lourenço in Lourenço & Velten

Cretaceous

Burmese amber

 Myanmar

A member of Buthoidea belonging to the family Palaeoburmesebuthidae

Burmesescorpiops velteni[20]

Sp. nov

Valid

Lourenço

Cretaceous

Burmese amber

 Myanmar

A member of the family Palaeoeuscorpiidae.

Chaerilobuthus petersi[21]

Sp. nov

Valid

Lourenço in Lourenço & Velten

Cretaceous

Burmese amber

 Myanmar

A member of the family Chaerilobuthidae.

Chaerilobuthus staxi[22]

Sp. nov

Valid

Lourenço in Lourenço & Velten

Cretaceous

Burmese amber

 Myanmar

A member of the family Chaerilobuthidae.

Paranotaburmesebuthus[23]

Gen. et sp. nov

Valid

Lourenço in Lourenço & Velten

Cretaceous

Burmese amber

 Myanmar

A member of Buthoidea belonging to the family Palaeoburmesebuthidae. The type species is P. schmidti.

Serratochaerilobuthus[24]

Gen. et sp. nov

Valid

Lourenço in Lourenço & Velten

Cretaceous

Burmese amber

 Myanmar

A member of the family Chaerilobuthidae. The type species is S. schmidti.

Scorpion research
  • Review of the higher classification of fossil scorpions is published by Dunlop & Garwood (2024) .[25]
  • Lourenço & Velten (2024) report the discovery of pro-juvenile specimens of Betaburmesebuthus kobberti trapped together in a piece of Burmese amber, and interpret this finding as possible evidence that Cretaceous palaeoburmesebuthid scorpions produced litters with reduced number of offspring but including large pro-juveniles.[26]

Solifugae

Name Novelty Status Authors Age Type locality Country Notes Images

Mesoproctus rayoli[27]

Sp. nov

Valid

Santana et al.

Early Cretaceous (Aptian—Albian)

Crato Formation

 Brazil

A whip scorpion belonging to the family Thelyphonidae.

Trombidiformes

Name Novelty Status Authors Age Type locality Country Notes Images

Pararesinacarus krczali[28]

Sp. nov

Valid

Khaustov et al.

Eocene

Rovno amber

 Ukraine

A mite belonging to the family Resinacaridae.

Resinacarus longipilis[28]

Sp. nov

Valid

Khaustov et al.

Eocene

Rovno amber

 Ukraine

A mite belonging to the family Resinacaridae.

Resinacarus striatus[28]

Sp. nov

Valid

Khaustov et al.

Eocene

Rovno amber

 Ukraine

A mite belonging to the family Resinacaridae.

Resinacarus vitzthumi[28]

Sp. nov

Valid

Khaustov et al.

Eocene

Rovno amber

 Ukraine

A mite belonging to the family Resinacaridae.

Rhombometridium[29]

Gen. et sp. nov

Valid

Khaustov, Vorontsov & Lindquist

Cretaceous

Burmese amber

 Myanmar

A mite belonging to the family Trochometridiidae. The type species is R. pankowskiorum.

Trombidiform research
  • Larvae of mites belonging to the group Erythraeoidea parasitising gall midges (providing evidence of an association unknown in extant fauna) are reported from the Cretaceous amber from Myanmar by Arce et al. (2024), who interpret this finding as indicative of shift of the host range of the studied mites after the Cretaceous.[30]

Other arachnids

Name Novelty Status Authors Age Type locality Country Notes Images

Douglassarachne[31]

Gen. et sp. nov

Valid

Selden & Dunlop

Carboniferous (Pennsylvanian)

Mazon Creek fossil beds

 United States
( Illinois)

A member of Pantetrapulmonata of uncertain affinities. The type species is D. acanthopoda.

Other arachnid research
  • A study on the mouthparts of members of the genus Palaeocharinus from the Rhynie chert (United Kingdom), providing evidence of the presence of a sophisticated mechanism for liquid feeding comparable to the filtration mechanisms of extant arachnids, is published by Long et al. (2024).[32]
  • A study on the structure of cuticles of Palaeocharinus, providing evidence of possible adaptations to terrestrial life, is published by Long et al. (2024).[33]

Eurypterids

Name Novelty Status Authors Age Type locality Country Notes Images

Qujingopterus[34]

Gen. et sp. nov

Ma et al.

Devonian

Xitun Formation

 China

A member of the family Stylonuridae. The type species is Q. spineus.

Eurypterid research

  • A study on the evolution of eurypterid body size is published by Ruebenstahl et al. (2024), who find that giant size evolved independently in different eurypterid lineages, without clear relation to habitat or environmental drivers.[35]
  • Bicknell et al. (2024) describe new fossil material of Silurian and Devonian eurypterids from the Wallace Shale and Merrimerriwa Formation (Australia), extending known geographical range of Jaekelopterus into Gondwana.[36]
  • A diverse assemblage of eurypterid remains, including isolated setae and cuticular sheets with attached setae, is described from the Devonian Ora Formation (Iraq) by Makled et al. (2024).[37]
  • Braddy (2024) studies the life mode of carcinosomatoid eurypterids, interpreting them as slow-swimming ambush predators and mud grubbers, and interprets megalograptids as likely more basal than carcinosomatids and mixopterids.[38]
  • Bicknell, Gaines & Hopkins (2024) describe a carcinosomatid specimen from the Ordovician strata from the Beecher's Trilobite Bed (New York, United States) preserving the first evidence for mesosomal musculature in eurypterids, and providing evidence that eurypterid musculature can be preserved in pyrite.[39]
  • Poschmann & Tollerton (2024) describe a new specimen of Eysyslopterus patteni from the Silurian Rootsiküla/Saaremaa Lagerstätte (Estonia), providing information on the morphology of the metastoma of the studied eurypterid.[40]
  • Description of genital appendages of Acutiramus macrophthalmus is published by Cheng & Briggs (2024).[41]

Xiphosurans

Xiphosuran research

Other chelicerates

Name Novelty Status Authors Age Type locality Country Notes Images

Titanoprosoma[43]

Gen. et sp. nov

Valid

Bicknell et al.

Carboniferous (Serpukhovian)

Bear Gulch Limestone

 United States
( Montana)

A member of Euchelicerata of uncertain affinities. The type species is T. edgecombei.

Setapedites[44] Gen. et sp. nov Valid

Lustri et al.

Lower Ordovician Fezouata Formation  Morocco A member of Euchelicerata recovered as an offacolid synziphosurine. The type species is S. abundantis.

Other chelicerate research

  • Lustri et al. (2024) describe new fossil material of Bunaia woodwardi from the Silurian (Přídolí) Williamsville Formation of the Bertie Group (Ontario, Canada), and interpret B. woodwardi as a member of the family Offacolidae.[45]
  • Revision of the taxonomy, morphology and stratigraphical distribution of members of the genus Limuloides is published by Howard (2024).[46]
  • Sabroux et al. (2024) revise the fossil material of Devonian sea spiders from the Hunsrück Slate (Germany), providing new information on their anatomy and affinities, and find no compelling evidence of Pantopoda in the Devonian.[47]

Crustaceans

Malacostracans

Name Novelty Status Authors Age Type locality Country Notes Images

Aguadites[48]

Gen. et sp. nov

Vega, Garassino, Nyborg & Pasini in Vega et al.

Late Cretaceous

 Cuba

A raninoid crab. The type species is A. hexagranula.

Binkhorstia desaegheri[49]

Sp. nov

Valid

Van Bakel et al.

Late Cretaceous (Santonian)

Vaals Formation

 Belgium

A crab belonging to the superfamily Retroplumoidea and the family Binkhorstiidae.

Bournelyreidus grahamae[50]

Sp. nov

Valid

Nyborg et al.

Late Cretaceous (Campanian)

Northumberland Formation

 Canada
( British Columbia)

A raninoid crab.

Calverteca[51]

Gen. et sp. nov

Valid

Godfrey, Feldmann & Schweitzer

Miocene

Calvert Formation

 United States
( Virginia)

An isopod belonging to the family Cymothoidae. The type species is C. osbornei.

Carcinoplax jonica[52]

Sp. nov

Valid

Garassino & Pasini in Girone et al.

Pleistocene

 Italy

A crab belonging to the family Goneplacidae.

Cretagourretia[53]

Gen. et sp. nov

Valid

Ossó, Charbonnier, Hyžný, van Bakel & Devillez in Ossó et al.

Early Cretaceous (Albian)

Escucha Formation

 Spain

A member of the family Ctenochelidae. The type species is C. salasi.

Distefania buerai[54]

Sp. nov

Valid

Ossó et al.

Late Cretaceous (Cenomanian)

Picofrentes Formation

 Spain

A crab belonging to the family Dromiidae and the subfamily Goniodromitinae.

Dugastella nitida[55]

Comb. nov

Valid

(Milne-Edwards)

Oligocene (Chattian)

 France

A shrimp belonging to the family Atyidae; moved from Caridina nitida Milne-Edwards (1879).

Eoactinotocarcinus[56]

Gen. et comb. nov

Valid

Ferratges

Eocene

Roda Formation

 Spain

A crab belonging to the subfamily Actinotocarcininae. The type species is "Periacanthus" tetracornis Ferratges et al. (2014)

Eogmelina[57]

Gen. et 2 sp. nov

Valid

Copilaş-Ciocianu & Ionesi

Miocene

 Romania

An amphipod belonging to the family Gammaridae. The type species is E. moldavica; genus also includes E. prisca.

Faksecarcinus prealpinus[58]

Sp. nov

Valid

De Angeli & Lovato

Eocene

 Italy

A crab belonging to the group Portunoidea.

Halicarcinus popeius[59]

Sp. nov

Valid

Gašparič et al.

Oligocene (Chattian)

Trbovlje Formation

 Slovenia

A crab belonging to the family Hymenosomatidae.

Icriocarcinus aldersonorum[60]

Sp. nov

Valid

Nyborg & Garassino

Late Cretaceous (Campanian)

Tuna Canyon Formation

 United States
( California)

A crab belonging to the family Lithophylacidae.

Ixoides miocenicus[61]

Sp. nov

Garassino, Pasini, Mirzaie Ataabadi & Nyborg in Garassino et al.

Miocene (Tortonian)

 Iran

A crab belonging to the family Leucosiidae and the subfamily Ebaliinae.

Joeranina tausi[53]

Sp. nov

Valid

Ossó, Charbonnier, Hyžný, van Bakel & Devillez in Ossó et al.

Early Cretaceous (Albian)

Escucha Formation

 Spain

A crab belonging to the family Palaeocorystidae.

Lucascinus trifailensis[59]

Sp. nov

Valid

Gašparič et al.

Oligocene (Chattian)

Trbovlje Formation

 Slovenia

A crab belonging to the family Hymenosomatidae.

Makrokylindrus itoi[62]

Sp. nov

Valid

Luque & Gerken

Plio-Pleistocene

Hijikata Formation

 Japan

A member of the family Diastylidae.

Minohellenus grolaensis[58]

Sp. nov

Valid

De Angeli & Lovato

Eocene

 Italy

A crab belonging to the group Portunoidea.

Necrocarcinus sibiricus[63]

Sp. nov

Kočová Veselská et al.

Late Cretaceous

 Russia
( Krasnoyarsk Krai)

A crab belonging to the family Necrocarcinidae.

Neogoneplax bradanica[52]

Sp. nov

Valid

Garassino & Pasini in Girone et al.

Pleistocene

 Italy

A crab belonging to the family Goneplacidae.

Palaeobresilia[64]

Gen. et sp. nov

Valid

Winkler et al.

Late Jurassic

 Germany

A shrimp belonging to the superfamily Bresilioidea. The type species is P. kurthetriegeri.

Parahyas[65]

Gen. et comb. nov

Valid

Charbonnier et al.

Miocene (Messinian)

 Algeria

A crab belonging to the superfamily Majoidea and the family Oregoniidae. The type species is "Hyas" oranensis Van Straelen (1937).

Paranecrocarcinus xivertensis[53]

Sp. nov

Valid

Ossó, Charbonnier, Hyžný, van Bakel & Devillez in Ossó et al.

Early Cretaceous (Aptian)

Benassal Formation

 Spain

A crab belonging to the family Necrocarcinidae.

Persianus[61]

Gen. et sp. nov

Garassino, Pasini, Mirzaie Ataabadi & Nyborg in Garassino et al.

Miocene (Tortonian)

 Iran

A crab belonging to the family Portunidae. The type species is P. arcuatus.

Portunus bericensis[66]

Sp. nov

Valid

De Angeli & Bellin

Eocene

 Italy

A species of Portunus.

Portunus planargiaensis[67]

Sp. nov

Valid

Pasini & Garassino

Miocene

 Italy

A species of Portunus.

Pseudocarcinus karlraubenheimeri[68]

Sp. nov

Valid

Van Bakel & Ossó

Miocene (Tongaporutuan)

Urenui Formation

 New Zealand

A relative of the Tasmanian giant crab.

Pyrenicola[69]

Gen. et comb. nov

Valid

Artal & Ossó

Paleocene and Eocene

 France
 Spain
 United States
( California)

A crab belonging to the family Geryonidae. The type species is "Xanthilites" macrodactylus Van Straelen (1924); genus also includes "Coeloma" martinezensis Rathbun (1926) and "Xanthilites macrodactylus" pyrenaicus Artal & Vía (1989), raised to the rank of the species Pyrenicola pyrenaica.

Raninoides granulofrons[48]

Sp. nov

Vega, Garassino, Nyborg & Pasini in Vega et al.

Late Cretaceous

 Cuba

A raninoid crab.

Rhinopterocaris fordycei[70]

Sp. nov

Valid

Liu et al.

Ordovician

Preservation Formation

 New Zealand

A member of Phyllocarida belonging to the family Caryocarididae.

Rodanina[48]

Gen. et sp. nov

Vega, Garassino, Nyborg & Pasini in Vega et al.

Late Cretaceous

 Cuba

A raninoid crab. The type species is R. monosensis.

Schramocaris robusta[71]

Comb. nov

(Peach)

Carboniferous (Tournaisian)

Ballagan Formation

 United Kingdom

A member of the family Tealliocarididae. Moved from Tealliocaris robusta Peach (1908).

Silvacarcinus cisuralicus[72]

Sp. nov

Valid

Mychko, Schweitzer & Feldmann

Late Cretaceous (Campanian)

 Russia
( Orenburg Oblast)

A crab belonging to the family Orithopsidae.

Tealliocaris briggsi[71]

Sp. nov

Clark & Ross

Carboniferous (Tournaisian)

Ballagan Formation

 United Kingdom

A member of the family Tealliocarididae.

Tealliocaris elliotti[73]

Sp. nov

Clark

Carboniferous (Bashkirian)

 United Kingdom

A member of the family Tealliocarididae.

Tealliocaris weegie[71]

Sp. nov

Clark & Ross

Carboniferous (Mississippian)

 United Kingdom

A member of the family Tealliocarididae.

Tumulosternum ortegai[56]

Sp. nov

Valid

Ferratges

Eocene

Roda Formation

 Spain

A crab belonging to the family Majidae.

Uncina ultima[74]

Sp. nov

Valid

Charbonnier et al.

Late Jurassic (Tithonian)

 Germany

An uncinid lobster.

Vincentdromia[75]

Gen. et comb. nov

Valid

Schweitzer

Eocene (Ypresian)

Vincentown Formation

 United States
( New Jersey)

A crab belonging to the family Dromiidae. The type species is "Dromiopsis" americana Roberts (1956).

Wahrania[65]

Gen. et comb. nov

Valid

Charbonnier et al.

Miocene (Messinian)

 Algeria

A crab belonging to the superfamily Majoidea and the family Epialtidae. The type species is "Maia" arambourgi Van Straelen (1937).

Malacostracan research

  • A study on the hydrodynamic performance of carapaces of caryocaridid archaeostracans, providing evidence that the carapace shapes facilitated the pelagic mode of life of caryocaridids, is published by Pates & Xue (2024).[76]
  • A study on carapaces of specimens of the caryocaridid species Soomicaris cedarbergensis from the Ordovician Xinertai Formation (China), providing probable evidence of adaptations to the pelagic lifestyle, is published by Liu et al. (2024).[77]
  • Bicknell et al. (2024) describe fossil material of mantis shrimps belonging to the group Archaeostomatopodea and possibly to the genus Tyrannophontes fom the Carboniferous Wea Shale Member of the Cherryvale Shale (Nebraska, United States), preserving the oldest evidence of the presence of biramous gilled appendages in mantis shrimps reported to date.[78]
  • Redescription of Kellnerius jamacaruensis is published by Barros, Oliveira & Saraiva (2024), who reaffirm the inclusion of this shrimp within the family Palaemonidae.[79]
  • Charbonnier et al. (2024) present the first reconstruction of the internal anatomy of Eryma ventrosum, based on data from a well-preserved female and male specimens from the La Voulte-sur-Rhône Lagerstätte (France).[80]
  • Purported crushing teeth of teleosts or Lepidotes from the Upper Cretaceous Allen, Los Alamitos, La Colonia, Loncoche and Chorrillo formations (Argentina) are reinterpreted as bio-gastroliths (temporary structures within the lateral walls of the stomach, serving as reservoirs of calcium carbonate before molting) of members of Astacidea by Panzeri et al. (2024).[81]
  • Luque et al. (2024) provide fossil node calibration points for the studies of the phylogenetic relationships of crabs, and reassess the earliest occurrences of members of several crab groups.[82]
  • Redescription of "Dromiopsis" oscari is published by LaBonte, Schweitzer & Feldmann (2024) who transfer this crab from the family Dynomenidae to the family Goniodromitidae and to the genus Sabellidromites.[83]
  • A study on the diversity and distribution of crabs belonging to the group Homoloida throughout their evolutionary history is published by Shaffer & Schweitzer (2024).[84]

Ostracods

Name Novelty Status Authors Age Type locality Country Notes Images

Adeditia tkachovae[85]

Sp. nov

Sobolev

Devonian-Carboniferous transition

 Russia

A member of the family Editiidae.

Aleisocythereis? picnus[86]

Sp. nov

Ceolin et al.

Cretaceous–Palaeogene transition

 Argentina

Ampuloides thungsamedensis[87] Sp. nov Promduang & Chitnarin Late Silurian -Early Devonian Kuan Tung Formation  Thailand A member of Podocopida belonging to the family Pachydomellidae.

Aurila hokkaidoensis[88]

Sp. nov

Mukai & Tanaka

Miocene

Kaigarabashi Formation

 Japan

Batecypris[89]

Gen. et sp. nov

Valid

Almeida-Lima et al.

Early Cretaceous (Aptian)

Crato Formation

 Brazil

Genus includes new species B. reticularis.

Bathoniella[90]

Gen. et comb. et 3 sp. nov

Valid

Tesakova

Middle Jurassic (Bathonian and Callovian)

 Belarus
 Germany
 Russia
 Ukraine

A member of Podocopida belonging to the family Progonocytheridae. The type species is "Palaeocytheridea" milanovskyi Lyubimova (1955); genus also includes new species B. prima, B. paenultima and B. ultima.

Blumeditia[85]

Gen. et 3 sp. nov

Sobolev

Devonian-Carboniferous transition

 Russia

A member of the family Editiidae. Genus includes new species B. eleganta, B. auctus and B. pretzella.

Callistocythere imaganensis[88]

Sp. nov

Mukai & Tanaka

Miocene

Kaigarabashi Formation

 Japan

Cuspicypris[91]

Nom. nov

Valid

Guillam

Early Cretaceous

Orós Formation

 Brazil

A member of Cypridoidea; a replacement name for Hastacypris Filho, Fauth & Sames.

Cyprideis goeldiensis[92]

Sp. nov

Ferreira & Ramos

Neogene

Solimões Formation

 Brazil

Cyprideis javariensis[92]

Sp. nov

Ferreira & Ramos

Neogene

Solimões Formation

 Brazil

Cytheropterina ainsworthi[93]

Sp. nov

Valid

Cabral, Lord & Pinto in Cabral et al.

Early Jurassic (Toarcian)

Póvoa da Lomba Formation

 Portugal

A member of the family Cytheruridae.

Derima[94]

Gen. et sp. nov

Siveter et al.

Silurian

Herefordshire Lagerstätte

 United Kingdom

A member of Beyrichicopida belonging to the group Binodicopina and the family Bolliidae. The type species is D. paparme.

Eucytherura alvaiazerensis[93]

Sp. nov

Valid

Cabral, Lord & Pinto in Cabral et al.

Early Jurassic (Toarcian)

Póvoa da Lomba Formation

 Portugal

A member of the family Cytheruridae.

Hemiparacytheridea condilomata[86]

Sp. nov

Ceolin et al.

Cretaceous–Palaeogene transition

 Argentina

Hysterocythereis acuminata[86]

Sp. nov

Ceolin et al.

Cretaceous–Palaeogene transition

 Argentina

Macunhaella[89]

Gen. et sp. nov

Valid

Almeida-Lima et al.

Early Cretaceous (Aptian)

Crato Formation

 Brazil

Genus includes new species M. posteroaltis.

Neonesidea chapminuta[95]

Sp. nov

McDonald, Weldon & Warne

Pliocene (Zanclean)

Jemmys Point Formation

 Australia

A member of the family Bairdiidae.

Oculocytheropteron jemmyensis[95]

Sp. nov

McDonald, Weldon & Warne

Pliocene (Zanclean)

Jemmys Point Formation

 Australia

A member of the family Cytheruridae.

Ophektycythere[93]

Gen. et 3 sp. nov

Valid

Cabral & Lord in Cabral et al.

Jurassic (Toarcian and Aalenian)

São Gião Formation

 Portugal
 United Kingdom

A member of the family Protocytheridae. The type species is O. herrrigi; genus also includes O. mataensis and possibly also O.? sicoensis.

Otocythere iberobritannica[93]

Sp. nov

Valid

Cabral & Lord in Cabral et al.

Early Jurassic (Toarcian)

Póvoa da Lomba Formation

 Portugal
 United Kingdom

A member of the family Cytheruridae.

Parabathoniella[90]

Gen. et comb. nov

Valid

Tesakova

Middle Jurassic (Bathonian)

 United Kingdom

A member of Podocopida belonging to the family Progonocytheridae. The type species is "Acanthocythere" elongata Wakefield (1994).

Paramunseyella stictus[86]

Sp. nov

Ceolin et al.

Cretaceous–Palaeogene transition

 Argentina

Philoneptunus plutonis[95]

Sp. nov

McDonald, Weldon & Warne

Pliocene (Zanclean)

Jemmys Point Formation

 Australia

A member of the family Trachyleberididae.

Procytherura praecoquum[96]

Sp. nov

Forel et al.

Late Jurassic (Oxfordian)

Terres Noires Formation

 France

Proeditia auriculata dimorpha[85]

Ssp. nov

Sobolev

Devonian-Carboniferous transition

 Russia

A member of the family Editiidae.

Rozhdestvenskayella[91]

Nom. nov

Valid

Guillam

Devonian (Frasnian)

 Russia

A replacement name for Ornatella Rozhdestvenskaya in Chibrikova & Rozhdestvenskaya (1959).

Rudolfestatscaphium[97]

Nom. nov

Li

Silurian

 Germany

A member of the family Bythocytheridae; a replacement name for Scaphium Jordan (1964). Published online in 2024, but the issue date is listed as December 2023.

Tasmanocypris salaputia[95]

Sp. nov

McDonald, Weldon & Warne

Pliocene (Zanclean)

Jemmys Point Formation

 Australia

A member of the family Candonidae.

Theriosynoecum favus[89]

Sp. nov

Valid

Almeida-Lima et al.

Early Cretaceous (Aptian)

Crato Formation

 Brazil

Timiriasevia aratra[89]

Sp. nov

Valid

Almeida-Lima et al.

Early Cretaceous (Aptian)

Crato Formation

 Brazil

Wangshangkia jiwozhaiensis[98]

Sp. nov

Song in Song et al.

Devonian (Givetian)

Dushan Formation

 China

A member of Podocopida belonging to the superfamily Bairdiocypridoidea and the family Bairdiocyprididae.

Wolburgiopsis magnafossa[89]

Sp. nov

Valid

Almeida-Lima et al.

Early Cretaceous (Aptian)

Ipubi Formation

 Brazil

Ostracod research

  • A study on pores and associated canals in extant and Triassic ornate bairdiids, providing new morphological data interpret as supporting the interpretation of the Triassic genera Mirabairdia and Nodobairdia as distinct from the extant genus Triebelina, is published by Forel et al. (2024).[99]
  • Taxonomic revision of ostracods from the Lower Cretaceous Codó Formation (Brazil) is published by Coimbra & Petró (2024).[100]
  • A study on changes of the diversity of ostracods from the Indo-Australian Archipelago region throughout the Cenozoic, aiming to determine factors responsible for recorded changes, is published by Tian et al. (2024), who argue that the studied region became the richest marine biodiversity hotspot mostly as a result of immunity to major extinction events during the Cenozoic, shift towards colder climate and the increase in habitat size (shelf area).[101]

Thecostracans

Name Novelty Status Authors Age Type locality Country Notes Images

Eolepas moorei[102]

Sp. nov

Valid

Gale

Late Triassic (Rhaetian)

Westbury Formation

 United Kingdom

A barnacle belonging to the family Eolepadidae.

Leweslepas cultellum[102]

Sp. nov

Valid

Gale

Late Cretaceous (Coniacian or Santonian)

 United Kingdom

A barnacle.

Parastramentum cenomanense[102]

Sp. nov

Valid

Gale

Late Cretaceous (Cenomanian)

Zig Zag Chalk Formation

 United Kingdom

A barnacle.

Zeugmatolepas gaultinum[102]

Sp. nov

Valid

Gale

Early Cretaceous (Albian)

Gault Clay

 United Kingdom

A barnacle.

Other crustaceans

Name Novelty Status Authors Age Type locality Country Notes Images

Cornia wasvilrensis[103]

Sp. nov

Valid

Poschmann et al.

Devonian

Klerf Formation

 Germany

A clam shrimp.

Eicheleaia[103]

Gen. et sp. nov

Valid

Poschmann et al.

Devonian

Klerf Formation

 Germany

A clam shrimp. The type species is E. wenndorfi.

Grauvogelocaris[104]

Gen. et sp. nov

Valid

Geyer, Hegna & Kelber

Triassic (Anisian)

Grès à Voltzia

 France

A member of the stem lineage of Diplostraca. The type species is G. alsatica.

Jurapingquania[105]

Nom. nov

Valid

Ceccolini & Cianferoni

Late Jurassic

Tuchengzi Formation

 China

A member of the family Eosestheriidae; a replacement name for Pingquania Wang in Wang & Li (2008). Published online in 2024, but the issue date is listed as December 2023.

Olesenocaris[104]

Gen. et sp. nov

Valid

Geyer, Hegna & Kelber

Triassic (Anisian)

Grès à Voltzia

 France

A non-calmanostracan phyllopod, possibly belonging to the stem lineage of Diplostraca. The type species is O. galli.

Palaeolimnadiopsis frankeorum[103]

Sp. nov

Valid

Poschmann et al.

Devonian

 Germany

A clam shrimp.

Punctatestheria yaojieensis[106]

Sp. nov

Valid

Xue & Li

Middle–Late Jurassic

Yaojie Formation

 China

A clam shrimp.

Shipingia luchangensis[107]

Comb. nov

(Chen)

Late Triassic (Rhaetian)

 China

A clam shrimp. Originally described as Euestheria? luchangensis Chen (1974).

Triglypta hebeiensis[108]

Sp. nov

Valid

Liao & Huang in Liao et al.

Middle Jurassic (Callovian)

Longmen Formation

 China

A clam shrimp belonging to the superfamily Eosestherioidea and the family Triglyptidae.

Other crustacean research

  • Alarcón et al. (2024) report the discovery of new clam shrimp assemblages from the Upper Triassic (Norian) Bocas and Montebel formations (Colombia), providing evidence of a similar composition of Norian clamp shrimp assemblages from northwestern Gondwana and rift basins of central Pangea (but different from those from southern Gondwana).[109]

Insects

Radiodonts

Name Novelty Status Authors Age Type locality Country Notes Images

Shucaris ankylosskelos[110]

Gen. et sp. nov

Valid

Wu et al.

Cambrian Stage 3

Maotianshan Shales

 China

A radiodont of uncertain phylogenetic placement. The type species is S. ankylosskelos.

Stanleycaris qingjiangensis[111]

Sp. nov

Valid

Wu et al.

Cambrian Stage 3

Qingjiang Lagerstätte

 China

A radiodont of the hurdiidae (peytoiidae) family. Another species, S. hirpex is known from North America.

Trilobites

Name Novelty Status Authors Age Type locality Country Notes Images

Alatacastava[112]

Gen. et comb. nov

Valid

Van Viersen & Müller

Devonian (Pragian–Emsian transition)

Abadía Formation

 France
 Luxembourg
 Spain

A member of the family Acastidae. The type species is "Pelitlina" corbachoi Basse & Müller (2016); genus also includes "Pelitlina" smeenki Lieberman & Kloc (1997) and "Acastava" faberi Basse & Franke (2006).

Andalusiana palaciosi[113]

Sp. nov

Valid

Sepúlveda et al.

Cambrian Stage 4

Soleras Formation

 Spain

A member of Redlichiida belonging to the group Olenellina.

Arduennella janseni[112]

Sp. nov

Valid

Van Viersen & Müller

Devonian (Emsian)

 Luxembourg

A member of the family Homalonotidae.

Bienvillia eurekensis[114]

Sp. nov

Valid

Taylor, Loch & Repetski

Cambrian (Furongian)

Windfall Formation

 United States
( Nevada)

A member of the family Olenidae.

Bromella utahensis[115]

Sp. nov

Valid

Sundberg, Cothren & Dehler

Cambrian

Nounan Formation

 United States
( Utah)

A member of the family Aphelaspididae.

Bruthansovaspis[116]

Gen. et comb. nov

Valid

Van Viersen

Silurian

Motol Formation

 Czech Republic

A member of the family Odontopleuridae. The type species is "Acidaspis" roemeri Barrande (1852); genus also includes "Odontopleura" dormitzeri Hawle & Corda (1847) and "Odontopleura" dumortieri Hawle & Corda (1847).

Eskoharpes sicarius[117]

Sp. nov

Valid

Johnson

Devonian

Achguig Group

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Flexicalymene trentonensis[118]

Sp. nov

Valid

Hopkins & Martin

Ordovician

Neuville Formation

 Canada
( Quebec)
 United States
( New York)

Fritchaspis edgecombei[117]

Sp. nov

Valid

Johnson

Devonian

Er Remlia Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Globampyx sexsegmentatus[119]

Sp. nov

Valid

Fortey, Vargas-Parra & Droser

Ordovician

Al Rose Formation

 United States
( California)

A member of the family Raphiophoridae.

Harpes boudibensis[117]

Sp. nov

Valid

Johnson

Devonian

El Otfal Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Harpes lahceni[117]

Sp. nov

Valid

Johnson

Devonian

El Otfal Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Harpes lentigo[117]

Sp. nov

Valid

Johnson

Devonian

Tazoulait Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Harpes oudris[117]

Sp. nov

Valid

Johnson

Devonian

El Otfal Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Harpes prescheri[117]

Sp. nov

Valid

Johnson

Devonian

Er Remlia Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Harpes sphenocephalus[117]

Sp. nov

Valid

Johnson

Devonian

Er Remlia Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Harpes supercilium[117]

Sp. nov

Valid

Johnson

Devonian

El Otfal Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Helioharpes aougili[117]

Sp. nov

Valid

Johnson

Devonian

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Kettneraspis freitagi[116]

Sp. nov

Valid

Van Viersen

Devonian

 Morocco

A member of the family Odontopleuridae.

Kielania tumula[117]

Sp. nov

Valid

Johnson

Devonian

Ihandar Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Kingstonia smithfieldensis[115]

Sp. nov

Valid

Sundberg, Cothren & Dehler

Cambrian

Nounan Formation

 United States
( Utah)

A member of the family Kingstoniidae.

Linguaphillipsia buchuensis[120]

Sp. nov

Tang et al.

Carboniferous

 Malaysia

Lioharpes ammari[117]

Sp. nov

Valid

Johnson

Devonian

Tazoulait Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Lioharpes galea[117]

Sp. nov

Valid

Johnson

Devonian

Ihandar Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Lioharpes morocconensis[117]

Sp. nov

Valid

Johnson

Devonian

Boutiskaouine Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Lioharpes saredra[117]

Sp. nov

Valid

Johnson

Devonian

Probably Boutiskaouine Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Lioharpes scopulum[117]

Sp. nov

Valid

Johnson

Devonian

Probably Ihandar Formation

 Morocco

A member of Harpetida belonging to the family Harpetidae.

Macropyge (Promacropyge) sahensis[121]

Sp. nov

Valid

Ghobadi Pour, Popov & Kebria-ee Zadeh

Cambrian (Furongian)

Mila Formation

 Iran

A member of Asaphida belonging to the family Ceratopygidae.

Maghroharpes[117]

Gen. et 9 sp. et comb. nov

Valid

Johnson

Devonian (Pragian to Emsian)

Ihandar Formation

 Czech Republic
 France
 Morocco

A member of Harpetida belonging to the family Harpetidae. The types species is M. hammii; genus also includes new species M. azmamarensis, M. forteyi, M. ihmadii, M. laatchanensis, M. minutipunctus, M. oufatenensis, M. terridus and M. zguidensis, as well as "Harpes" rouvillei Frech (1887) and "Harpes" sculptus Hawle & Corda (1847).

Niobella darvarensis[121]

Sp. nov

Valid

Ghobadi Pour, Popov & Kebria-ee Zadeh

Cambrian (Furongian)

Mila Formation

 Iran

A member of Asaphida belonging to the family Asaphidae.

Olenellus santuccii[122]

Sp. nov

Valid

Webster in Webster & Caron

Cambrian Stage 4

Eager Formation

 Canada
( British Columbia)

A member of the family Olenellidae.

Pinnuloharpes[117]

Gen. et 8 sp. et comb. nov

Valid

Johnson

Devonian (Emsian to Eifelian)

El Otfal Formation

 Morocco
 Germany?

A member of Harpetida belonging to the family Harpetidae. The types species is P. segaouii; genus also includes new species P. apteros, P. chaperon, P. hannabouensis, P. haustrum, P. igaouii, P. merzaneensis and P. torquis, as well as "Harpes" hamarlaghdadensis Crônier et al. (2018) and probably also "Harpes" fornicatus Novák (1890) and "Harpes" pygmaeus Lütke (1965).

Protopresbynileus divergens[119]

Sp. nov

Valid

Fortey, Vargas-Parra & Droser

Ordovician

Al Rose Formation

 United States
( California)

A member of the family Nileidae.

Staurocephalus oliveae[123]

Sp. nov

Valid

Leidi et al.

Ordovician (Katian)

Sholeshook Limestone

 United Kingdom

A member of the family Encrinuridae.

Stoloharpes[117]

Gen. et 4 sp. et comb. nov

Valid

Johnson

Devonian (Lochkovian to Eifelian)

 Czech Republic
 Morocco

A member of Harpetida belonging to the family Harpetidae. The types species is S. rissaniensis; genus also includes new species S. calceolus, S. capricornus and S. retiarius, as well as "Kielania" obuti Pribyl & Vanek (1986) and "Harpes" convexus Hawle & Corda (1847).

Termierella totanesensis[113]

Sp. nov

Valid

Sepúlveda et al.

Cambrian Stage 4

Soleras Formation

 Spain

A member of Redlichiida belonging to the group Ellipsocephaloidea and the family Ellipsocephalidae.

Timsaloproetus xenos[112]

Sp. nov

Valid

Van Viersen & Müller

Devonian (Emsian)

 Luxembourg

A member of the family Proetidae.

Triarthrus novoaustralis[124] Sp. nov Valid Smith et al. Ordovician (Katian) Malachis Hill Formation  Australia A member of Ptychopariida belonging to the family Olenidae

Ulugtella? biformis[125]

Sp. nov

Valid

Pereira, Rábano & Gutiérrez-Marco

Ordovician (Katian)

 Morocco

Wanneria cranbrookense[122]

Sp. nov

Valid

Webster in Webster & Caron

Cambrian Stage 4

Eager Formation

 Canada
( British Columbia)

A member of Olenelloidea belonging to the family Wanneriidae.

Waukeshaaspis[126]

Gen. et sp. nov

Valid

Randolfe & Gass

Silurian (Telychian)

Brandon Bridge Formation

 United States
( Wisconsin)

A member of the family Dalmanitidae. The type species is W. eatonae.

Trilobite research

  • Drage (2024) finds evidence of only minor differences in morphometry between trilobites displaying different modes of moulting.[127]
  • Trilobite fossil material from the Tiout section in Morocco, representing the first occurrence of trilobites in West Gondwana and some of the oldest trilobite fossils in general, is determined to be approximately 519.62-million-years-old by Sinnesael, Millard & Smith (2024).[128]
  • El Albani et al. (2024) report the discovery of exceptionally preserved trilobite specimens from the Cambrian Tatelt Formation (Morocco) fossilized through rapid ash burial caused by underwater pyroclastic flow, providing new information on the trilobite anatomy.[129]
  • A study on the growth and development of Sahtuia carcajouensis and Mackenzieaspis parallelispinosa from the Cambrian Mount Cap Formation (Canada) is published by Handkamer & Pratt (2024), who report evidence of decrease in the number of episodes of segment release in both taxa, possibly as a result of local environmental conditions.[130]
  • Singla et al. (2024) demarcate the stratigraphic thickness of the Oryctocephalus salteri biozone in the Cambrian (Wuliuan) Parahio Member of the Kunzam La Formation in the Spiti region, preserving diverse trilobite fossils, and correlate the O. salteri biozone of the Kunzam La Formation with the Tonkinella-Hundwarella bearing level of the Nutunus Formation in the Kashmir region.[131]
  • Evidence interpreted as indicative of a direct link between the spread of low-oxygen conditions in shallow-water settings and the turnover of trilobites from the North China Platform during the Steptoean positive carbon isotope excursion is presented by Yang et al. (2024).[132]
  • A study on the affinities of harpetid and trinucleioid trilobites is published by Beech, Bottjer & Smith (2024), who argue that the body plan with a wide, flattened cephalic brim or fringe evolved independently in the two groups, and interpret trinucleids as likely specialized asaphids.[133]
  • Evidence from the study of soft-bodied specimens of Olenoides serratus and Triarthrus eatoni, interpreted as indicating that trilobites had five pairs of cephalic appendages, is presented by Hou & Hopkins (2024).[134]
  • Hopkins, Gutiérrez-Marco & Di Silvestro (2024) describe fossil material of Leptoplastides salteri from the Fezouata Formation (Morocco), extending known range of this species from Avalonia into Gondwana.[135]
  • Losso & Ortega-Hernández (2024) describe the appendages of Ceraurus pleurexanthemus and Flexicalymene senaria from the Walcott–Rust quarry (New York, United States) and report close morphological similarity of the exopodite structure in C. pleurexanthemus and Anacheirurus adserai in spite of the two species living in different environments and being separated by 20 million years.[136]
  • Specimens of Dalmanitina socialis preserved with remains of the alimentary tract are described from the Ordovician Letná Formation (Czech Republic) by Fatka, Budil & Mikuláš (2024).[137]
  • Bicknell et al. (2024) describe a specimen of Toxochasmops vormsiensis from the Katian Kõrgessaare Formation (Estonia) preserved molted within the body chamber of a nautiloid cephalopod Gorbyoceras textumaraneum, representing the first known record of cryptic molting of pterygometopid trilobites.[138]
  • Evidence indicating that two peaks of in trilobite cephalic shape diversity in the Ordovician and the Devonian were caused by different underlying mechanisms is presented by Drage & Pates (2024).[139]
  • A study on the biogeography of Cheirurina during the Ordovician is published by Pérez-Peris, Adrain & Daley (2024).[140]
  • Bicknell, Smith & Miller-Camp (2024) and Bicknell, Smith & Hopkins (2024) revise the record of trilobite specimens with malformations from the collections of the Indiana University[141] and the American Museum of Natural History.[142]
  • A study on the phylogenetic relationships of cheirurine, deiphonine and "cyrtometopine" cheirurids is published by Pérez-Peris, Adrain & Daley (2024).[143]

Other arthropods

Name Novelty Status Authors Age Type locality Country Notes Images

Ankitokazocaris lariensis[144]

Sp. nov

Valid

Ji & Tintori

Middle Triassic (Ladinian)

Buchenstein Formation

 Italy

A thylacocephalan.

Atropicaris lintveri[145]

Sp. nov

Valid

Laville et al.

Middle Triassic (Anisian)

Lower Serla Dolomite Formation

 Slovenia

A thylacocephalan.

Heterochordeuma liae[146]

Sp. nov

Valid

Su, Cai & Huang

Cretaceous (Albian-Cenomanian)

Burmese amber

 Myanmar

A millipede belonging to the family Heterochordeumatidae.

Kamnikaris[145]

Gen. et sp. nov

Valid

Laville et al.

Middle Triassic (Anisian)

Strelovec Formation

 Slovenia

A thylacocephalan. The type species is K. cemazevkaensis.

Lomankus[147] Gen. et

sp. nov

Valid Pary et

al.

Upper Ordovician (Katian) Beecher’s Trilobite Beds  United States
( New York)
A late surviving member of the Megacheira belonging to the family Leanchoiliidae. The type species is L. edgecombei.

Lotagnostus clarki[114]

Sp. nov

Valid

Taylor, Loch & Repetski

Cambrian (Furongian)

Windfall Formation

 United States
( Nevada)

A member of Agnostida belonging to the family Agnostidae.

Lotagnostus morrisoni[114]

Sp. nov

Valid

Taylor, Loch & Repetski

Cambrian (Furongian)

Windfall Formation

 United States
( Nevada)

A member of Agnostida belonging to the family Agnostidae.

Lotagnostus nolani[114]

Sp. nov

Valid

Taylor, Loch & Repetski

Cambrian (Furongian)

Windfall Formation

 United States
( Nevada)

A member of Agnostida belonging to the family Agnostidae.

Lotagnostus rushtoni[114]

Sp. nov

Valid

Taylor, Loch & Repetski

Cambrian (Furongian)

Windfall Formation

 United States
( Nevada)

A member of Agnostida belonging to the family Agnostidae.

Microcaris ajdovskae[145]

Sp. nov

Valid

Laville et al.

Late Triassic (Carnian)

Martuljek Limestone Formation

 Slovenia

A thylacocephalan.

Neoagnostus parki[114]

Sp. nov

Valid

Taylor, Loch & Repetski

Cambrian (Furongian)

Windfall Formation

 United States
( Nevada)

A member of Agnostida belonging to the family Diplagnostidae.

Paracalodiscus[148]

Gen. et comb. nov

Valid

Korovnikov & Bushuev

Cambrian

Brigus Formation

 Canada
 Russia

A member of Agnostida belonging to the family Weymouthiidae. The type species is "Microdiscus" helena Walcott (1889); genus also includes "Calodiscus" granulosus Egorova & Shabanov (1972).

Parisicaris naoyai[149]

Sp. nov

Valid

Ehiro & Kano

Early Triassic (Olenekian)

Osawa Formation

 Japan

A thylacocephalan belonging to the family Microcarididae.

Pectocaris paraspatiosa[150]

Sp. nov

Valid

Jin et al.

Cambrian Stage 3

Hongjingshao Formation

 China

A hymenocarine belonging to the pectocarididae family.

Siphonorhinus globosus[151]

Sp. nov

Valid

Su, Cai & Huang

Cretaceous (Albian to Cenomanian)

Burmese amber

 Myanmar

A millipede belonging to the family Siphonorhinidae.

Siphonorhinus peculiaris[151]

Sp. nov

Valid

Su, Cai & Huang

Cretaceous (Albian to Cenomanian)

Burmese amber

 Myanmar

A millipede belonging to the family Siphonorhinidae.

Stoppanicaris[144]

Gen. et sp. nov

Valid

Ji & Tintori

Middle Triassic (Ladinian)

Buchenstein Formation

 Italy

A thylacocephalan. The type species is S. grignaensis.

Tomagnostella tullbergi[152]

Sp. nov

Valid

Weidner, Nielsen & Ebbestad

Cambrian (Guzhangian)

 Norway
 Sweden

A member of Agnostida.

Youti[153]

Gen. et sp. nov

Valid

Smith et al.

Cambrian Stage 3

Yu'anshan Formation

 China

A member of the lower stem group of Euarthropoda. The type species is Y. yuanshi.

  • A study on the morphological diversity of carapaces of bradoriids is published by Cox & Pates (2024).[154]
  • O'Flynn et al. (2024) describe new fossil material of Bushizheia yangi from the Cambrian Chengjiang Lagerstätte (China), providing new information on its head morphology, and interpret the studied specimens as supporting the interpretation of a six-segmented head as an ancestral state for Deuteropoda.[155]
  • Redescription and a study on the affinities of Urokodia aequalis is published by Liu et al. (2024), who interpret this arthropod as a basal member of Artiopoda, and interpret its body plan as likely similar to the ancestral body plan for Artiopoda.[156]
  • Lin et al. (2024) describe new fossil material of Retifacies abnormalis from the Cambrian Helinpu Formation (Yunnan, China) including large specimens with a carapace ornamentation different from what was previously known, and interpret the reported differences as developing during ontogeny, but don't consider them to indicate sexual dimorphs.[157]
  • Izquierdo-López & Caron (2024) describe new fossil material of Odaraia alata from the Burgess Shale (Canada), including well-preserved mandibles that can be homologized with those of Cambrian fuxianhuiids and extant mandibulates.[158]
  • Braddy (2024) reviews diversity, ichnology, ecology and evolution of euthycarcinoids, and names a new family Apankuridae.[159]
  • A study on the anatomy of heads of juvenile specimens of Arthropleura from the Carboniferous Montceau-les-Mines Lagerstätte (France) is published by Lhéritier et al. (2024), who report evidence of the presence of millipede-like trunk tagmosis and centipede-like head characters in Arthropleura, and argue that Arthropleura might be a member of Pectinopoda more closely related to millipedes than to centipedes.[160]
  • Le Cadre et al. (2024) describe new centipede specimens from the Cretaceous amber from Myanmar, including a henicopid representing the oldest unambiguous member of [[]] in the fossil record reported to date.[161]
  • Review of the fossil record of millipedes is published by Álvarez-Rodríguez et al. (2024).[162]

General research

  • Turner, McLoughlin & Mays (2024) review the known record of plant–arthropod interactions on Early and Middle Triassic fossil leaves from Gondwana, reevaluate known record of the studied interactions in the Australian Middle Triassic Benolong Flora, and argue that concerted investigations can greatly increase the number of plant–arthropod interactions in the studied fossil assemblages.[163]
  • Loewen et al. (2024) describe a diverse amber deposit from the Maastrichtian strata from the Big Muddy Badlands (Canada), preserving fossils of representatives of seven arthropod orders and at least 11 insect families, and interpret the studied assemblage as providing evidence of a faunal turnover among insects prior to the Cretaceous–Paleogene extinction event.[164]

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