List of the Mesozoic life of Delaware

This list of the Mesozoic life of Delaware contains the various prehistoric life-forms whose fossilized remains have been reported from within the US state of Delaware and are between 252.17 and 66 million years of age.

A

A living Acteon barrel bubble sea snail
†Acteon
- †Acteon cretacea
†Acutostrea
- †Acutostrea plumosa
†Aenona – tentative report
- †Aenona eufaulensis
†Agerostrea
- †Agerostrea mesenterica
†Amaurellina
- †Amaurellina stephensoni
†Ambigostrea
- †Ambigostrea tecticosta
Fossilized shell of the Jurassic-Miocene sea snail Ampullina
†Ampullina
- †Ampullina lepta
- †Ampullina lirata
- †Ampullina meekana
†Anaklinoceras
- †Anaklinoceras reflexum
- †Anaklinoceras tenuicostatum
†Anchura – tentative report
†Anisomyon – tentative report
- †Anisomyon borealis
- †Anisomyon jessupi
†Anomalofusus
- †Anomalofusus substriatus – tentative report
Interior and exterior of a shell of an Anomia, or jingle shell
†Anomia
- †Anomia argentaria
- †Anomia radiata
- †Anomia tellinoides
†Anomoeodus
- †Anomoeodus phaseolus
†Aphrodina
- †Aphrodina eufaulensis
- †Aphrodina tippana
Fossilized skeleton of the Late Cretaceous bony fish Apsopelix
†Apsopelix
- †Apsopelix anglicus
†Araloselachus
- †Araloselachus cuspidata
†Arca
- †Arca macnairyensis
Architectonica – or unidentified comparable form
- †Architectonica voragiformis
Arrhoges
Shell of a modern Astarte bivalve
Astarte – tentative report
†Avellana
- †Avellana bullata

B

†Baculites
- †Baculites haresi
- †Baculites minerensis
- †Baculites ovatus
- †Baculites undatus
Barbatia
Fossilized guard of the Late Cretaceous belemnoid cephalopod Belemnitella
†Belemnitella
- †Belemnitella americana
†Bellifusus
- †Bellifusus curvicostatus
†Belliscala – or unidentified comparable form
- †Belliscala creideri
†Beretra
Bernaya
- †Bernaya burlingtonensis
Life restoration of the Late Cretaceous bony fish Bonnerichthys with an anachronistic scuba diver to scale
†Bonnerichthys
- †Bonnerichthys gladius
†Brachyrhizodus
- †Brachyrhizodus wichitaensis
†Breviarca
- †Breviarca haddonfieldensis
- †Breviarca richardsi – tentative report
†Buccinopsis
†Bulla
- †Bulla macrostromata

C

Cadulus
- †Cadulus obnutus
Caestocorbula
- †Caestocorbula crassiplica
†Calliomphalus
- †Calliomphalus americanus – tentative report
- †Calliomphalus nudus
- †Calliomphalus paucispirilus
†Camptonectes
- †Camptonectes bellisculptus
- †Camptonectes burlingtonensis
†Cantharulus – tentative report
Shells of modern Capulus cap sea snails
Capulus
Cardium [fr; nl; sv]
- †Cardium spillmani
Caryocorbula
†Caveola
†Cenomanocarcinus
- †Cenomanocarcinus robertsi
Cerithium
- †Cerithium weeksi
†Chesapeakiceras
- †Chesapeakiceras nodatum – type locality for species
Clavagella
- †Clavagella armata
Life restoration of the Late Cretaceous mosasaurid Clidastes
†Clidastes – or unidentified comparable form
Cliona
†Clisocolus
†Coelosaurus
- †Coelosaurus antiquus
Corbula
Crassatella
- †Crassatella newkirkensis
- †Crassatella vadosa
†Crenella
- †Crenella serica
†Cretodus
- †Cretodus borodini
Fossil of the Early Cretaceous-Eocene shark Cretolamna
†Cretolamna
- †Cretolamna appendiculata
†Cryptotexanites
- †Cryptotexanites paedomorphicus – type locality for species
Cucullaea
- †Cucullaea tippana
- †Cucullaea vulgaris
Cuspidaria
- †Cuspidaria grandis
Cylichna
- †Cylichna secalina
†Cylindrocanthus – or unidentified comparable form
†Cymbophora
- †Cymbophora subtilis
†Cymella
- †Cymella bella
- †Cymella ironensis
†Cyprimeria
- †Cyprimeria excavata

D

†Dentalium
- †Dentalium intercalatum
- †Dentalium subarctuatum
†Dhondtichlamys – tentative report
- †Dhondtichlamys venustus
Restoration of several species of the Late Cretaceous ammonoid cephalopod Didymoceras
†Didymoceras
- †Didymoceras binodosum
- †Didymoceras cheyennense
- †Didymoceras draconis
- †Didymoceras platycostatum
- †Didymoceras stevensoni
†Distefania
- †Distefania lauginigeri
†Drepanochilus
†Dryptosaurus

E

†Ecphora – tentative report
†Ellipsoscapha
Emarginula
Restoration of the Early Cretaceous-Eocene bony fish Enchodus, or the "saber-toothed herring"
†Enchodus
- †Enchodus ferox
†Endoptygma – or unidentified comparable form
- †Endoptygma leprosa
†Eoacteon
- †Eoacteon percultus
†Etea
- †Etea carolinensis
†Eufistulana
†Eulophoceras – tentative report
†Euspira
- †Euspira rectilabrum
†Eutrephoceras
- †Eutrephoceras dekayi
†Exiteloceras
- †Exiteloceras jenneyi
Interior of a fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra
†Exogyra
- †Exogyra cancellata
- †Exogyra costata
- †Exogyra ponderosa
- †Exogyra ponderosa erraticostata

G

Gastrochaena
†Gegania
- †Gegania bella
†Gervilliopsis
Ginglymostoma
- †Ginglymostoma globidens
†Ginglyostoma
- †Ginglyostoma globidens
Life restoration of the Late Cretaceous mosasaur Globidens
†Globidens
- †Globidens alabamensis
Glossus
Glycymeris
- †Glycymeris mortoni
†Graciliala
- †Graciliala johnsoni
†Granocardium
- †Granocardium dumosum
- †Granocardium kummeli
- †Granocardium tenuistriatum
†Gryphaeostrea
- †Gryphaeostrea vomer
Gyrodes
- †Gyrodes abyssinus
- †Gyrodes americanus – tentative report
- †Gyrodes supraplicatus
- †Gyrodes vetrosus

H

Life restoration of the Late Cretaceous mosasaur Halisaurus
†Halisaurus
- †Halisaurus platyspondylus
†Hamulus
- †Hamulus major
- †Hamulus onyx
†Harduinia
- †Harduinia florealis
Haustator – or unidentified comparable form
- †Haustator lenolensis
Hemiaster
- †Hemiaster delawarensis
- †Hemiaster ungula
†Hercorhyncus
†Hoploscaphites
- †Hoploscaphites vistulensis
Restoration of two of the Permian-Late Cretaceous cartilaginous fish Hybodus
†Hybodus
†Hypotodus
- †Hypotodus aculeatus

I

Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size
†Inoceramus
†Ischyodus
- †Ischyodus bifurcatus
†Ischyrhiza
- †Ischyrhiza avonicola – or unidentified comparable form
- †Ischyrhiza mira