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Atlas
All Species
Geology
Chordata
Chondrichthyes
Hybodontidae
Ptychodontidae
Ptychodus
Ptychodus
Phylum:
Chordata
Class:
Chondrichthyes
Order:
Hybodontidae
Family:
Ptychodontidae
Genus:
Ptychodus
Common Name: Fold Teeth
Ptychodus
Species present in the Cretaceous of the Western Interior Seaway
Ptychodus anonymous
Ptychodus decurrens
Ptychodus mortoni
