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 living Acteon barrel bubble sea snail
Fossilized shell of the Jurassic-Miocene sea snail Ampullina
Interior and exterior of a shell of an Anomia , or jingle shell
Fossilized skeleton of the Late Cretaceous bony fish Apsopelix
Shell of a modern Astarte bivalve
Fossilized guard of the Late Cretaceous belemnoid cephalopod Belemnitella
Life restoration of the Late Cretaceous bony fish Bonnerichthys with an anachronistic scuba diver to scale
Shells of modern Capulus cap sea snails
Life restoration of the Late Cretaceous mosasaurid Clidastes
Fossil of the Early Cretaceous-Eocene shark Cretolamna
Restoration of several species of the Late Cretaceous ammonoid cephalopod Didymoceras
Restoration of the Early Cretaceous-Eocene bony fish Enchodus , or the "saber-toothed herring"
Interior of a fossilized shell of the Jurassic-Cretaceous foam oyster Exogyra
Life restoration of the Late Cretaceous mosasaur Globidens
Life restoration of the Late Cretaceous mosasaur Halisaurus
Restoration of two of the Permian-Late Cretaceous cartilaginous fish Hybodus
Fossilized shell of the Early Jurassic-Late Cretaceous marine bivalve Inoceramus with a human indicating its size
Fossilized shell of the Late Cretaceous ammonoid cephalopod Jeletzkytes
Illustration of a living Lepisosteus , or gar
Electron micrograph of fossilized teeth from the Early Jurassic-Early Cretaceous freshwater shark Lissodus
Interior of a fossilized shell of the Early Ordovician-modern marine bivalve Nucula
A living Odontaspis sand shark
Fossilized shell of the Late Cretaceous ammonoid cephalopod Pachydiscus
Fossilized shell of the Late Cretaceous ammonoid cephalopod Placenticeras
Fossilized teeth of the Cretaceous shark Pseudocorax
Life restoration of the Late Cretaceous pterosaur Pteranodon
Restoration of the Late Cretaceous-Paleocene ray Rhombodus
Restoration of several of the Early Cretaceous-Miocene shark Scapanorhynchus
Life restoration of the Late Cretaceous shark Squalicorax
Mounted fossilized skeleton of the Late Cretaceous sea turtle Toxochelys
Restoration of the Late Cretaceous mosasaur Tylosaurus
Life restoration of the Cretaceous bony fish Xiphactinus