''Neophylloceras'' is an extinct genus of cephalopod belonging to the
Ammonite
Ammonoids are extinct, (typically) coiled-shelled cephalopods comprising the subclass Ammonoidea. They are more closely related to living octopuses, squid, and cuttlefish (which comprise the clade Coleoidea) than they are to nautiluses (family N ...
subclass.
References
Cretaceous ammonites
{{Ammonite-stub