The oysters " Exogyra " and " Gryphaea " were preserved in great abundance during the Cretaceous period.
4.
Invertebrates that lived in New Jersey during the Cretaceous include the oysters " Exogyra ponderosa " and " Gryphaea ".
5.
Common fossils include Pyncnodonte mutabilis, Pyncnodonte convexa, Exogyra cancellata, Exogyra costata, Ostrea mesenterica, Agerostrea, Belemnitella americana and shark teeth.
6.
Common fossils include Pyncnodonte mutabilis, Pyncnodonte convexa, Exogyra cancellata, Exogyra costata, Ostrea mesenterica, Agerostrea, Belemnitella americana and shark teeth.
7.
""'Exogyra " "'is an extinct genus of fossil saltwater oysters, substrates in warm seas during the Jurassic and Cretaceous periods.
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