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Ancyloceras, an ammonite.

Ancyloceras

Ancyloceras, an ammonite.

Scaphites equalis is a species of extinct cephalopods that thrived during the Cretaceous period. "A genus of ammonites, or fossil ammonoid cephalopods of scaphoid shape, typical of the family <i>Scaphitidae</i>; the scaphites. The have the early walls regularly involute, but the last whorl detached, and straight for some distance, when it becomes again recurved toward the body." &mdash;Whitney, 1889

Scaphites equalis, Extinct Cephalopod Fossil

Scaphites equalis is a species of extinct cephalopods that thrived during the Cretaceous period. "A…