n.
Pronunciation: ' a-m ə - ˌ n ī t
Function: noun
Etymology: New Latin ammonites, from Latin cornu Ammonis, literally, horn of Ammon
Date: 1758
: any of a subclass (Ammonoidea) of extinct cephalopods especially abundant in the Mesozoic age that had flat spiral shells with the interior divided by septa into chambers
– am · mo · nit · ic \ ˌ a-m ə - ' ni-tik \ adjective
ammonite