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All Species
Geology
Mollusca
Cephalopoda
Orthoceratoidea
Orthoceratoidea
Phylum:
Mollusca
Class:
Cephalopoda
Order:
Orthoceratoidea
Families of Orthoceratoidea present in the Pennsylvanian of the American Midcontinent
Brachycycloceratidae