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

Precambrian-Paleozoic

The Paleobiology Database records no known occurrences of Precambrian or Paleozoic fossils in Delaware.

List of the prehistoric life of Delaware

Mesozoic

Selected Mesozoic taxa of Delaware

†Acteon

†Aenona – tentative report

†Agerostrea

†Ampullina

†Anaklinoceras

†Anomia

†Anomoeodus

†Apsopelix

†Apsopelix anglicus

†Arca

Architectonica – or unidentified comparable form

Arrhoges

Astarte – tentative report

†Avellana

†Baculites

†Baculites haresi

†Baculites ovatus

Barbatia

†Belemnitella

†Belemnitella americana

Bernaya

†Bonnerichthys

†Bulla

Cadulus

Caestocorbula

†Caestocorbula crassiplica

†Calliomphalus

†Calliomphalus americanus – tentative report

†Calliomphalus nudus

Capulus

†Caveola

Cerithium

Clavagella

†Clidastes – or unidentified comparable form

Cliona

†Coelosaurus

†Coelosaurus antiquus

Corbula

†Crenella

†Crenella serica

†Cretolamna

†Cretolamna appendiculata

Cucullaea

Cuspidaria

†Cuspidaria grandis

Cylichna

†Cymella

†Dentalium

†Didymoceras

†Didymoceras binodosum

†Didymoceras cheyennense

†Didymoceras platycostatum

†Didymoceras stevensoni

†Dryptosaurus

†Ecphora – tentative report

Emarginula

†Enchodus

†Euspira

†Eutrephoceras

†Exiteloceras

†Exogyra

†Exogyra cancellata

†Exogyra costata

†Exogyra ponderosa

Gastrochaena

†Gegania

Ginglymostoma

†Globidens

†Globidens alabamensis

Glossus

Glycymeris

†Halisaurus

†Halisaurus platyspondylus

†Hamulus

Haustator – or unidentified comparable form

†Hoploscaphites

†Hybodus

†Inoceramus

†Ischyodus

†Ischyodus bifurcatus

†Ischyrhiza

†Ischyrhiza avonicola – or unidentified comparable form

†Ischyrhiza mira

†Jeletzkytes

Lepisosteus – or unidentified comparable form

Lima

†Linearis

†Lingula – tentative report

†Lissodus

Lithophaga

Lopha

†Lopha falcata

†Lucina

Martesia

†Mathilda

†Menuites

†Morea – or unidentified comparable form

†Neithea

†Neithea quinquecostata

Nucula

†Nucula percrassa

Odontaspis

†Ornithomimus

Ostrea

†Pachydiscus

†Pachymelania

Panopea

†Paralbula

† Paranomia

Patella

†Pecten

Pholadomya

†Pholadomya occidentalis

Pholas – tentative report

†Pinna

†Placenticeras

Plicatula

†Pseudocorax

†Pteranodon – tentative report

†Pteria

†Pterotrigonia

†Pterotrigonia eufaulensis

†Ptychotrygon

Pycnodonte

†Pycnodonte mutabilis

Rhinobatos

†Rhombodus

Ringicula

†Sargana

†Scapanorhynchus

†Scapanorhynchus texanus

†Scaphites

†Scaphites hippocrepis

†Sclerorhynchus

Serpula

Spondylus

Squalicorax

†Squalicorax falcatus

†Squalicorax kaupi

†Squalicorax pristodontus

Squatina

†Stephanodus

Tellina

†Tenea

†Toxochelys

Trachycardium

†Trachycardium eufaulensis

†Trigonia

Trionyx

Turritella

†Turritella tippana

†Turritella trilira

†Turritella vertebroides

†Tylosaurus

Tympanotonos – or unidentified comparable form

Xenophora

†Xiphactinus

Cenozoic

Selected Cenozoic taxa of Delaware

†Amphicyon

Anadara

†Anadara ovalis

†Anchitheriomys

†Anchitherium

Anomia

†Anomia simplex

†Archaeohippus

Argopecten

†Argopecten irradians

Astarte

Astyris

Barnea

Busycon

†Busycon perversum

Busycotypus

†Busycotypus canaliculatus

Cadulus

Caecum

Calliostoma

Calyptraea

†Calyptraea centralis

Cancellaria

Carcharhinus

†Carcharhinus brachyurus

†Carcharhinus limbatus

†Carcharhinus perezii

Carcharodon

List of the prehistoric life of Delaware