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Atlas
All Species
Geology
Mollusca
Cephalopoda
Ammonoidea
Sphenodiscidae
Sphenodiscus
Sphenodiscus
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Ammonoidea
Family:
Sphenodiscidae
Genus:
Sphenodiscus
Sphenodiscus
Species present in the Cretaceous of the Western Interior Seaway
Sphenodiscus beecheri
Sphenodiscus dumbi
Sphenodiscus lenticularis
