''Anagaudryceras'' is an

extinct Extinction is the termination of a kind of organism or of a group of kinds (taxon), usually a species. The moment of extinction is generally considered to be the death of the last individual of the species, although the capacity to breed and ...

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

ammonite Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...

from the later Cretaceous belonging to the

Ammonoidea Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttle ...

family

Gaudryceratidae Gaudryceratidae is a family belonging to the extinct Ammonoidea, ammonoid suborder Lytoceratina that lived from the Barremian of the Lower Cretaceous to the Maastrichtian of the Upper Cretaceous. Gaudryceratids are lytocerins typically with roun ...

. ''Anagaudryceras'' has a moderately involute shell with a deep umbilicus and strongly ribbed outer whorl. Ribs are thick and rounded and cross over the venter uninterrupted.

References

* * Wani, R. 2007. Differential preservation of the Upper Cretaceous ammonoid ''Anagaudryceras limatum'' with corrugated shell in central Hokkaido, Japan. Acta Palaeontologica Polonica 52 (1) 200

The Paleobiology Datase ''Anagaudriceras'' entry
accessed 5 April 2012 Lytoceratina Ammonites of Europe Ammonites of Australia Cretaceous ammonites of North America Albian genus first appearances Cenomanian genera Turonian genera Coniacian genera Santonian genera Campanian genera Maastrichtian genus extinctions {{Ammonite-stub