Species accepted as of June 2014: == See also == ...
• (n.) A genus of large marine gastropods having the outer border of the lip divided into lobes; -- called also scorpion shell.
Pte·roc'e·ras noun [ New Latin , from Greek ... a wing + ... a horn.] (Zoology) A genus of large marine gastropods having the outer border of the lip divided into lobes; -- called also scorpion shell .