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Atlas
All Species
Geology
Echinodermata
Echinoidea
Euechinoidea
Pseudodiadematidae
Tetragramma
Tetragramma
Phylum:
Echinodermata
Class:
Echinoidea
Order:
Euechinoidea
Family:
Pseudodiadematidae
Genus:
Tetragramma
Tetragramma
Species present in the Cretaceous of the Western Interior Seaway
Tetragramma steeruwitz
