List of the Mesozoic life of Delaware

Last updated February 13, 2024

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

J

Fossilized shell of the Late Cretaceous ammonoid cephalopod Jeletzkytes
† Jeletzkytes
- † Jeletzkytes compressus
Juliacorbula – or unidentified comparable form
- † Juliacorbula swedesboroensis

L

† Latiala – or unidentified comparable form
- † Latiala lobata
† Laxispira
- † Laxispira lumbricalis
- † Laxispira monilifera
† Legumen
- † Legumen concentricum
- † Legumen ellipticum – tentative report
- † Legumen planulatum
Illustration of a living Lepisosteus , or gar
Lepisosteus – or unidentified comparable form
† Leptosolen
- † Leptosolen biplicata
Lima
- † Lima lorillardensis
† Linearis
- † Linearis contracta
- † Linearis magnoliensis
- † Linearis metastriata
† Lingula – tentative report
† Liopistha
- † Liopistha alternata – tentative report
- † Liopistha protexta
Electron micrograph of fossilized teeth from the Early Jurassic-Early Cretaceous freshwater shark Lissodus
† Lissodus
- † Lissodus babulskii
Lithophaga
- † Lithophaga julia
† Longoconcha
Lopha
- † Lopha falcata
† Lucina
† Lyriochlamys – or unidentified comparable form
Malletia
- † Malletia longifrons
- † Malletia protexta – tentative report
- † Malletia stephensoni
† Margaritella
Martesia
† Mathilda
† Menabites
- † Menabites delawarensis
- † Menabites vanuxemi
† Menuites
- † Menuites portlocki
† Micrabacia
- † Micrabacia marylandica
† Morea – or unidentified comparable form
- † Morea marylandica

N

† Napulus
- † Napulus reesidei
† Neithea
- † Neithea quinquecostata
† Nemocardium
- † Nemocardium parahillanum
† Nemodon
- † Nemodon eufaulensis
† Nonactaeonina
† Notoceras
- † Notoceras monotuberculatum
Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula
Nucula
- † Nucula percrassa
- † Nucula whitfieldi – tentative report
Nuculana
- † Nuculana compressifrons
- † Nuculana marlboroensis
† Nuculano
- † Nuculano stephensani
† Nudivagus
† Nymphalucina
- † Nymphalucina parva

O

A living Odontaspis sand shark
Odontaspis
- † Odontaspis macrota
- † Odontaspis sahammeri
- † Odontaspis samhammeri
† Ornithomimus
- † Ornithomimus antique
† Ornopsis – or unidentified comparable form
- † Ornopsis digressa
Ostrea

P

Fossilized shell of the Late Cretaceous ammonoid cephalopod Pachydiscus
† Pachydiscus
† Pachymelania
† Paladmete
- † Paladmete cancellaria
- † Paladmete gardnerae
† Palaeocypraea
- † Palaeocypraea grooti – type locality for species
Panopea
- † Panopea decisa
† Paralbula
- † Paralbula casei
† Paranomia
- † Paranomia scabra
† Paranomotodon
- † Paranomotodon agustidens
- † Paranomotodon angustidens
† Parietiplicatum – or unidentified comparable form
- † Parietiplicatum conicum
† Parmicorbula
- † Parmicorbula bisulcata
Patella
- † Patella tentorium
† Pecten
Pholadomya
- † Pholadomya occidentalis
Pholas – tentative report
† Pinna
- † Pinna laqueata
Fossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras
† Placenticeras
- † Placenticeras placenta
- † Placenticeras syrtale
† Pleuriocardia – or unidentified related form
- † Pleuriocardia donohuensis
† Pleurocardia – tentative report
- † Pleurocardia uniformis
† Plicatolamna
- † Plicatolamna arcuata
Plicatula
- † Plicatula mullicaensis
† Postligata
- † Postligata crenata
- † Postligata wordeni
Fossilized teeth of the Cretaceous shark Pseudocorax
† Pseudocorax
- † Pseudocorax granti
† Pseudohypolophus
† Pseudolimea
- † Pseudolimea kerri
- † Pseudolimea reticulata
Pseudomalaxis
† Pseudoschloenbachia
- † Pseudoschloenbachia chispaensis – or unidentified comparable form
Life restoration of the Late Cretaceous pterosaur Pteranodon
† Pteranodon – tentative report
† Pteria
† Pterocerella – or unidentified comparable form
- † Pterocerella poinsettiformis
† Pterotrigonia
- † Pterotrigonia bartrami
- † Pterotrigonia eufaulensis
- † Pterotrigonia thoracia
† Ptychotrygon
- † Ptychotrygon vermiculata
Pycnodonte
- † Pycnodonte mutabilis
† Pygurostoma
- † Pygurostoma geometricum
† Pyrifusus
- † Pyrifusus sinuocostatus
† Pyropsis
- † Pyropsis perlata

R

† Radiopecten
- † Radiopecten mississippiensis
† Remera – tentative report
Rhinobatos
- † Rhinobatos casieri
Restoration of the Late Cretaceous-Paleocene ray Rhombodus
† Rhombodus
- † Rhombodus laevis
Ringicula
† Ripleyella

S

† Sargana
† Scambula
- † Scambula perplana
Restoration of several of the Early Cretaceous-Miocene shark Scapanorhynchus
† Scapanorhynchus
- † Scapanorhynchus texanus
† Scaphites
- † Scaphites hippocrepis
† Sclerorhynchus
Serpula
† Solenoceras
- † Solenoceras annulifer
† Sourimis – or unidentified comparable form
- † Sourimis georgiana
† Spiroxybeloceras
- † Spiroxybeloceras meekanum
Spondylus
Life restoration of the Late Cretaceous shark Squalicorax
Squalicorax
- † Squalicorax falcatus
- † Squalicorax kaupi
- † Squalicorax pristodontus
Squatina
- † Squatina hassei
† Stephanodus
† Submortoniceras
- † Submortoniceras punctatum
- † Submortoniceras uddeni
† Syncyclonema
- † Syncyclonema conradi
- † Syncyclonema simplicius
† Synodontaspis
- † Synodontaspis holmdelensis

T

Tellina
† Tenea
Terebratulina
- † Terebratulina cooperi
† Texanites
† Tintorium – tentative report
Mounted fossilized skeleton of the Late Cretaceous sea turtle Toxochelys
† Toxochelys
Trachycardium
- † Trachycardium eufaulensis
- † Trachycardium longstreeti – tentative report
† Trigonia
Trionyx
- † Trionyx halophilus – type locality for species
† Tundora – or unidentified comparable form
- † Tundora tuberculata
Turritella
- † Turritella lorillardensis
- † Turritella macnairyensis
- † Turritella marshalltownensis
- † Turritella merchantvillensis
- † Turritella quadrilira
- † Turritella tippana
- † Turritella trilira
- † Turritella vertebroides
Restoration of the Late Cretaceous mosasaur Tylosaurus
† Tylosaurus
Tympanotonos – or unidentified comparable form
- † Tympanotonos cretacea

U

† Unicardium – or unidentified comparable form
- † Unicardium umbonatum
† Urceolabrum
- † Urceolabrum mantachieensis – tentative report

V

† Veniella
- † Veniella conradi
† Vetericardiella
- † Vetericardiella subcircula
† Volutomorpha

W

† Wadeopsamea – tentative report
† Weeksia
† Woodsella
- † Woodsella typica

X

Xenophora
Life restoration of the Cretaceous bony fish Xiphactinus
† Xiphactinus

References

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

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List of the Mesozoic life of Delaware

Contents

A

B

C

D

E

G

H

I

J

L

N

O

P

R

S

T

U

V

W

X

References