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Temporal range: Jurassic[1]
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Genus: Kosmermoceras

Kosmermoceras is an extinct genus from a well-known class of fossil cephalopods, the ammonites. It lived during the Jurassic Period,[1] which lasted from approximately 200 to 145 million years ago.


  1. ^ a b Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology 364: p.560. Retrieved 2008-04-05.