This list of the prehistoric life of Arizona contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Arizona.

The Paleobiology Database records no known occurrences of Precambrian fossils in Arizona.

• †Achistrum
• †Aglaocrinus
• †Altudoceras
• †Alula
• †Amphiscapha
• †Annularia
  • †Annularia asteris
  • †Annularia mucronata
  • †Annularia stellata
• †Anomphalus
• †Aphyllopteris
• †Arastra – type locality for genus
• †Archaeocidaris

• 

  †Archimedes
  • †Archimedes intermedius
  • †Archimedes invaginatus
  • †Archimedes lativolvis
  • †Archimedes proutanus
  • †Archimedes terebriformis
• †Arizonerpeton – type locality for genus
• †Athyris
• †Aulopora
• †Aviculopecten
  • †Aviculopecten bellatulus – type locality for species
  • †Aviculopecten girtyi – or unidentified comparable form
  • †Aviculopecten kaibabensis – type locality for species
• †Bellerophon
• †Brachyphyllum

• 

  †Calamites
  • †Calamites cisti
• †Callipteris
  • †Callipteris conferta
• †Camarotoechia
  • †Camarotoechia metallica
  • †Camarotoechia mutata
• †Caninia – tentative report
• †Chonetes
  • †Chonetes oklahomensis
• †Cleiothyridina
  • †Cleiothyridina orbicularis

• 

  †Composita
  • †Composita humilis
  • †Composita laevis
  • †Composita mexicana
  • †Composita ovata
  • †Composita ozarkana
  • †Composita subtilita
  • †Composita trinuclea
• †Cooksonia – or unidentified comparable form
• †Cordaites
  • †Cordaites principalis
• †Cycloceras
• †Cyclopteris
• †Cymatochiton – tentative report

• 

  †Cyrtospirifer
  • †Cyrtospirifer whitneyi
• †Cystodictya
• †Echinaria
• †Edmondia
• †Elfridia – type locality for genus
• †Elrathia
• Eocaudina
• †Euomphalus
  • †Euomphalus utahensis
• †Fenestella
• †Fusulina

• 

  †Glikmanius
  • †Glikmanius occidentalis
• †Globular
• †Gnathorhiza – or unidentified comparable form
• †Hastimima – tentative report
• †Hedeia
• †Hexagonaria
• †Hyolithes
• †Icriodus
• †Idiognathodus
• †Kaibabvenator – type locality for genus
  • †Kaibabvenator swiftae – type locality for species
• †Kootenia
• †Lepidodendron
  • †Lepidodendron aculeatum
• †Lepidostrobus
• †Lingula
• †Lingulella
• †Liroceras

• 

  †Metacoceras
• †Michelina
• †Modiolus
• †Murchisonia
• †Naticopsis
  • †Naticopsis kaibabensis – type locality for species
  • †Naticopsis waterlooensis
• †Neospirifer – tentative report
  • †Neospirifer dunbari
• †Neuropteris
  • †Neuropteris heterophylla
  • †Neuropteris scheuchzeri
• †Nisusia
• Nucula

• 

  †Olenellus
• †Ophiderpeton
• †Orodus
• †Orthacanthus
• †Pachyphyllum
• †Pagiophyllum
• †Paladin
• †Palmatolepis
  • †Palmatolepis triangularis
• †Paterina
• †Pecopteris
• †Pentremites
• †Petalodus
• †Phillipsia

• 

  †Phlegethontia
• †Pinna
• †Platyceras
• †Polygnathus
• †Prodentalium
• †Ptyonius – tentative report
• †Rugosa
• †Sallya – tentative report
• †Scoyenia
• Serpula
• Solemya
• †Solenomorpha – report made of unidentified related form or using admittedly obsolete nomenclature
• †Spathognathodus

• 

  †Sphenophyllum
  • †Sphenophyllum gilmorei – type locality for species
  • †Sphenophyllum oblongifolium
• †Sphenopteris
• †Spirifer
  • †Spirifer centronatus
• †Spiriferina
• †Stigmaria
• †Stroboceras
• †Syringopora
• †Tainoceras

• 

  †Triodus
• †Venustodus
• †Vidria
• †Walchia
• †Wardia
• †Wilkingia
• †Worthenia
• †Yarravia
• Yoldia

• †Acaenasuchus – type locality for genus
  • †Acaenasuchus geoffreyi – type locality for species
• †Acallosuchus – type locality for genus
  • †Acallosuchus rectori – type locality for species

• 

  †Acanthohoplites
  • †Acanthohoplites berkeyi
  • †Acanthohoplites erraticus
  • †Acanthohoplites hesper
  • †Acanthohoplites impetrabilis
  • †Acanthohoplites schucherti
  • †Acanthohoplites teres
• Acirsa
• Acmaea
• †Acrodus
• †Acteon
• †Adamanasuchus – type locality for genus
  • †Adamanasuchus eisenhardtae – type locality for species
• †Adocus
• †Allocrioceras
• †Ammorhynchus – type locality for genus
  • †Ammorhynchus navajoi – type locality for species
• †Anaschisma – report made of unidentified related form or using admittedly obsolete nomenclature
• †Angistorhinus – tentative report
• †Anisoceras
• †Anomia
• †Apachesaurus
  • †Apachesaurus gregorii
• †Apatosaurus
• †Araucarioxylon

  • 

    †Araucarioxylon arizonicum
• †Arca
• Arctica
• †Arganodus
• †Arizonasaurus – type locality for genus
  • †Arizonasaurus babbitti – type locality for species
• Astarte
• †Australosomus – or unidentified comparable form
• †Baculites
  • †Baculites calamus
• Barbatia
• †Beudanticeras
• †Boreosomus – tentative report
• Cadulus
• †Calamites
• †Calamophylliopsis
• †Calsoyasuchus – type locality for genus
  • †Calsoyasuchus valliceps – type locality for species
• †Calycoceras
• †Calyptosuchus
  • †Calyptosuchus wellesi

• 

  †Camposaurus – type locality for genus
  • †Camposaurus arizonensis – type locality for species
• †Caprina
• Carota
• †Ceratodus
• Cerithiopsis
• Charonia – tentative report
• †Chatterjeea
• †Chindesaurus – type locality for genus
  • †Chindesaurus bryansmalli – type locality for species
• †Chinlea – tentative report
• †Chirotherium
  • †Chirotherium barthii
  • †Chirotherium rex – type locality for species
  • †Chirotherium sickleri
• Chlamys
• †Cibolaites
• †Coelophysis

  • 

    †Coelophysis kayentakatae – type locality for species
• †Collignoniceras
  • †Collignoniceras woollgari
• †Colognathus
• Corbula
• †Cosgriffius – type locality for genus
• †Craniscus
• Crassostrea
• †Crosbysaurus
  • †Crosbysaurus harrisae
• Cucullaea
• †Cunningtoniceras
• Cuspidaria
• †Cyclothyris
• Cylichna
• †Dentalium
• †Desmatochelys
• †Desmatosuchus
  • †Desmatosuchus haplocerus
  • †Desmatosuchus spurensis
• †Dilophosauripus – type locality for genus

• 

  †Dilophosaurus
  • †Dilophosaurus wetherilli – type locality for species
• †Dinnebitodon – type locality for genus
  • †Dinnebitodon amarali – type locality for species
• Discinisca
• †Dolicholatirus – tentative report
• †Dromomeron
  • †Dromomeron gregorii
• †Dufrenoyia
  • †Dufrenoyia compitalis
  • †Dufrenoyia joserita
  • †Dufrenoyia justinae
• †Edentosuchus – tentative report
• Elliptio

• 

  †Eocaecilia – type locality for genus
  • †Eocaecilia micropodia – type locality for species
• †Eocyclotosaurus
• †Eopneumatosuchus – type locality for genus
  • †Eopneumatosuchus colberti – type locality for species
• †Eucalycoceras
• †Eulima – tentative report
• †Eunaticina
• †Euomphaloceras
• †Euspira
• †Exogyra
  • †Exogyra acroumbonata
  • †Exogyra lancha
  • †Exogyra levis
  • †Exogyra olisiponensis
• †Fagesia

• 

  †Gervillia
  • †Gervillia cholla
  • †Gervillia heinemani
  • †Gervillia navajovus – type locality for species
  • †Gervillia rasori
• Ginkgo
• †Grallator
• †Gryphaea
• †Gyrolepis
• †Hadrokkosaurus – type locality for genus
  • †Hadrokkosaurus bradyi – type locality for species
• †Hamites
• †Hamulus
• †Hesperosuchus – type locality for genus
  • †Hesperosuchus agilis – type locality for species
• Homarus
• †Hopiichnus – type locality for genus
• †Hybodus

• 

  †Inoceramus
  • †Inoceramus corpulentas
  • †Inoceramus dimidius – or unidentified comparable form
  • †Inoceramus flavus
  • †Inoceramus heinzi – or unidentified related form
  • †Inoceramus lamarcki
  • †Inoceramus nodai
  • †Inoceramus pictus
• †Kamerunoceras
• †Kayentachelys – type locality for genus
  • †Kayentachelys aprix – type locality for species
• †Kayentapus – type locality for genus
• †Kayentasuchus – type locality for genus
  • †Kayentasuchus walkeri – type locality for species
• †Kayentatherium – type locality for genus
  • †Kayentatherium wellesi – type locality for species
• †Kayentavenator – type locality for genus
• †Koskinonodon
• Lepisosteus

• 

  †Leptosuchus
  • †Leptosuchus crosbiensis
• Lima
• Limatula
• †Linearis
• †Lingula
• †Lissodus – tentative report
• Lithophaga
• †Lonchidion
• Lopha
• †Lucina
• Lunatia – tentative report

• 

  †Machaeroprosopus – type locality for genus
  • †Machaeroprosopus buceros
  • †Machaeroprosopus jablonskiae – type locality for species
  • †Machaeroprosopus mccauleyi – type locality for species
  • †Machaeroprosopus pristinus – type locality for species
  • †Machaeroprosopus tenuis – type locality for species
  • †Machaeroprosopus validus – type locality for species
• †Mammites
• †Megalosauripus
• †Melvius
• Membranipora – or unidentified comparable form
• †Metoicoceras
  • †Metoicoceras geslinianum
  • †Metoicoceras mosbyense

• 

  †Metoposaurus
• †Modiolus
• †Moenkopia – type locality for genus
• †Monopleura
• †Morganucodon
• †Morrowites
• †Mytilus – tentative report
• †Navahopus – type locality for genus
• †Neithea
• †Neocardioceras
  • †Neocardioceras juddii
  • †Neocardioceras minutum
• †Neoptychites
• †Nerinea
• Nerita
• Neritina
• Nucula

• 

  †Oligokyphus
• †Opis
• Ostrea
• †Oxytoma
• †Pachyrhizodus – or unidentified comparable form
• †Parasuchus
• †Paratypothorax
• †Parrishia – type locality for genus
• †Pecten
• †Permocalculus
• Pholadomya
• Physa
• †Pinna
• †Placenticeras
  • †Placenticeras cumminsi

• 

  †Placerias – type locality for genus
  • †Placerias hesternus – type locality for species
• Plicatula
• † Pollex – tentative report
• Polydora – tentative report
• †Poposaurus
  • †Poposaurus gracilis
• †Postosuchus
  • †Postosuchus kirkpatricki
• †Pravusuchus
  • †Pravusuchus hortus

• 

  †Prosalirus – type locality for genus
  • †Prosalirus bitis – type locality for species
• †Protome – type locality for genus
  • †Protome batalaria – type locality for species
• †Protosuchus – type locality for genus
  • †Protosuchus richardsoni – type locality for species
• †Pseudoperna
• †Pteraichnus – type locality for genus
  • †Pteraichnus saltwashensis – type locality for species
• Pycnodonte
  • †Pycnodonte kellumi – or unidentified related form
  • †Pycnodonte newberryi
• †Pyncnodonte
• †Quasicyclotosaurus – type locality for genus
  • †Quasicyclotosaurus campi – type locality for species
• †Quitmaniceras

• 

  †Revueltosaurus
  • †Revueltosaurus callenderi
  • †Revueltosaurus hunti
• †Rhadalognathus – type locality for genus
• †Rhamphinion – type locality for genus
  • †Rhamphinion jenkinsi – type locality for species
• Ringicula
• †Rioarribasuchus
  • †Rioarribasuchus chamaensis
• Rostellaria
• †Rutiodon
• †Sarahsaurus – type locality for genus
• †Scaphites
• †Scutarx – type locality for genus

• 

  †Scutellosaurus – type locality for genus
  • †Scutellosaurus lawleri – type locality for species
• †Segisaurus – type locality for genus
  • †Segisaurus halli – type locality for species
• †Selaginella
• †Semionotus – or unidentified comparable form
• †Senis
• Serpula
• †Shuvosaurus
  • †Shuvosaurus inexpectatus
• †Smilosuchus – type locality for genus
  • †Smilosuchus adamanensis – type locality for species
  • †Smilosuchus gregorii – type locality for species
  • †Smilosuchus lithodendrorum – type locality for species
• Solemya

• 

  †Sonorasaurus – type locality for genus
  • †Sonorasaurus thompsoni – type locality for species
• Spirorbis
• Squilla – tentative report
• †Stagonolepis
• †Stanocephalosaurus – type locality for genus
  • †Stanocephalosaurus birdi – type locality for species
• †Syntarsus
• †Tanytrachelos
• †Tecovasaurus
  • †Tecovasaurus murryi
• †Tecovasuchus
  • †Tecovasuchus chatterjeei
• Tellina
• †Tenea

• 

  †Tenontosaurus
• †Thomasites
• †Tragodesmoceras
• †Trigonia
  • †Trigonia aliformis - or unidentified loosely related form
  • †Trigonia cragini
  • †Trigonia guildi
  • †Trigonia kitchini
  • †Trigonia mearnsi
  • †Trigonia reesidei
  • †Trigonia resoluta
  • †Trigonia saavedra
  • †Trigonia stolleyi
  • †Trigonia weaveri
• †Trilophosaurus
  • †Trilophosaurus buettneri
  • †Trilophosaurus jacobsi – type locality for species
• †Triodus
• Turritella

• 

  †Typothorax
• †Uatchitodon
  • †Uatchitodon schneideri
• Unio
• †Vancleavea – type locality for genus
  • †Vancleavea campi – type locality for species
• †Vascoceras
• †Vigilius
  • †Vigilius wellesi
• Viviparus
• Vulsella
• †Watinoceras
  • †Watinoceras coloradoense
  • †Watinoceras devonense
  • †Watinoceras hattini
  • †Watinoceras praecursor – or unidentified comparable form
• †Wellesaurus
  • †Wellesaurus peabodyi – type locality for species
• †Yezoites

• †Adelphailurus
• †Agriotherium
• †Alforjas
• †Ambystoma
  • †Ambystoma tigrinum

• 

  †Amphimachairodus
• †Amplibuteo
• Antrozous
  • †Antrozous pallidus
• Aquila
• †Arctodus
• †Aztlanolagus
• Baiomys
• Bassariscus
• Bison
• †Borophagus
  • †Borophagus diversidens
  • †Borophagus parvus – type locality for species
• Brachylagus
• Bufo
  • †Bufo woodhousei

• 

  †Camelops
  • †Camelops hesternus – or unidentified comparable form
• Canis
  • †Canis armbrusteri
  • †Canis dirus
  • †Canis edwardii
  • †Canis ferox
  • †Canis latrans
• †Capromeryx
• †Carpocyon
• Castor
• Celtis
  • †Celtis reticulata
• Cervus
• †Chasmaporthetes
• †Chrysocyon
• †Citellus
• Cnemidophorus
• Cratogeomys
• Crotaphytus – or unidentified comparable form

• 

  †Cuvieronius
• Desmodus
  • †Desmodus stocki
• †Diceratherium
• †Dinohippus
• Dipodomys
• †Dipoides
• †Epicyon
  • †Epicyon haydeni
• Eptesicus – or unidentified comparable form
• Equus

  • 

    †Equus scotti – or unidentified comparable form
  • †Equus simplicidens
• Erethizon
• †Eucyon
  • †Eucyon davisi
• Eumeces
• Eumops
  • †Eumops perotis – or unidentified comparable form
• †Geococcyx
  • †Geococcyx californianus
• Geomys
• †Glossotherium

• 

  †Glyptotherium
  • †Glyptotherium texanum
• †Hemiauchenia
• †Hesperotestudo
• Heterodon
  • †Heterodon nasicus – or unidentified comparable form
• †Histiotus
• †Homotherium – tentative report
• Hyla
• †Hypolagus
• Ictalurus – tentative report

• 

  †Indarctos – tentative report
• Kinosternon
  • †Kinosternon arizonense – type locality for species
• Lampropeltis
  • †Lampropeltis getulus
• Lasiurus
  • †Lasiurus blossevillii – or unidentified comparable form
• Lemmiscus
  • †Lemmiscus curtatus
• Lepus
• Lynx
• †Machairodus
• †Mammut
• †Mammuthus

  • 

    †Mammuthus columbi
• Marmota
• Martes
• †Megalonyx
  • †Megalonyx jeffersonii
• †Megatylopus
• Meleagris
• †Merychyus
• †Metalopex
• Microtus
• †Morrillia
• Mustela
  • †Mustela frenata – or unidentified comparable form
• Myotis
  • †Myotis thysanodes
  • †Myotis velifer
• †Nannippus
• †Neochoerus
• Neotoma
  • †Neotoma albigula – or unidentified comparable form
  • †Neotoma cinerea
  • †Neotoma mexicana – or unidentified comparable form
• Nerodia

• 

  †Nothrotheriops
• †Nothrotherium
• Notiosorex
  • †Notiosorex crawfordi
• Odocoileus
• Ondatra
  • †Ondatra zibethicus
• †Onychocampodea – type locality for genus
• †Onychomachilis – type locality for genus
• Onychomys
• Ovis
  • †Ovis canadensis – type locality for species
• Panthera

  • 

    †Panthera leo
• †Paramachaerodus
• †Paramylodon
  • †Paramylodon harlani
• †Paronychomys
• Perognathus
• Peromyscus
• Pituophis
  • †Pituophis melanoleucus

• 

  †Platygonus
  • †Platygonus compressus
• †Pleiolama
• †Plesiogulo
• †Plionarctos
• †Protolabis
• †Pseudaelurus – report made of unidentified related form or using admittedly obsolete nomenclature
• Ptinus
• †Rana
• Reithrodontomys
• †Repomys

• 

  †Rhynchotherium
• Scaphiopus
• Sciurus
  • †Sciurus aberti – or unidentified comparable form
• Sigmodon
• Sorex
• Spermophilus
  • †Spermophilus variegatus
• Spilogale
  • †Spilogale putorius

• 

  †Stegomastodon
  • †Stegomastodon mirificus
• †Stenomylus
• †Stockoceros
• Sylvilagus
  • †Sylvilagus audubonii – or unidentified comparable form
• Tapirus
  • †Tapirus merriami – or unidentified comparable form
• Taxidea
  • †Taxidea taxus
• Tayassu
  • †Tayassu tajacu
• †Teleoceras
• Terrapene
  • †Terrapene ornata – or unidentified comparable form

• 

  †Tetrameryx – or unidentified comparable form
• Thamnophis
• Thomomys
• †Titanotylopus
  • †Trigonictis macrodon
• Urocyon
• Vulpes
  • †Vulpes velox

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.