ammonoid

listen to the pronunciation of ammonoid
الإنجليزية - التركية

تعريف ammonoid في الإنجليزية التركية القاموس.

ammonite
ammonit
ammonite
bir kafadanbacaklı kabuğunun fosili
ammonite
fosil
الإنجليزية - الإنجليزية
Characteristic of an ammonite
Any of a group of extinct shelled cephalopods, related to the modern pearly nautilus, that are commonly found as fossils in marine rocks of the Devonian through Cretaceous periods (410-65 million years ago). Most ammonoids were predators. The shells, either straight or coiled, served as protective and supportive structures and enabled the animals to compensate for varying water depths. Ammonoids are important index fossils because of their wide geographic distribution in shallow marine waters, rapid evolution, and easily recognizable features. See also belemnoid
ammonite
{i} extinct cephalopod mollusk
ammonoids
plural of ammonoid
ammonoid
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