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All Species
Geology
Mollusca
Cephalopoda
Goniatitida
Girtyoceratidae
Girtyoceratidae
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Goniatitida
Family:
Girtyoceratidae
Genera of Girtyoceratidae present in the Pennsylvanian of the American Midcontinent
Eumorphoceras
