ammonoid

About 0.02 uses per million words.

Meaning

1. noun An extinct cephalopod of the subclass †Ammonoidea (including ammonites).
2. adjective Characteristic of an ammonite.

Similar words

ammonite cephalopods ammonitid amynodontid neoammonite cornu ammonis anomphalid anisoceratid amaltheid amoebid

Often followed by

fauna cephalopods zones faunas shells species and genera zone shell

Word family

ammonoids