''Calliphylloceras'' is an

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 ...

belonging to the

Phylloceratidae Phylloceratidae is the predominant family of the Phylloceratina with some 15 or more genera found in rocks ranging from the Lower Jurassic to the Upper Cretaceous. Members of the Phylloceratidae are characterized by smooth, involute shells with v ...

Species

Species within this genus include:Paleobiology Database
/ref> * ''Calliphylloceras alontinum'' (Gemmellaro, 1884) * ''Calliphylloceras bicicolae'' * ''Calliphylloceras capitanii'' * ''Calliphylloceras demidoffi'' (Rousseau, 1842) * ''Calliphylloceras disputabile'' (type) Spath, 1927 * ''Calliphylloceras freibrocki'' Imlay, 1953 * ''Calliphylloceras kochi'' (Oppel, 1865) * ''Calliphylloceras nilssoni'' * ''Calliphylloceras nizinanum'' * ''Calliphylloceras propinquum'' * ''Calliphylloceras seroplicatum'' * ''Calliphylloceras spadae'' * ''Calliphylloceras supraliasicum'' The

holotype A holotype (Latin: ''holotypus'') is a single physical example (or illustration) of an organism used when the species (or lower-ranked taxon) was formally described. It is either the single such physical example (or illustration) or one of s ...

of ''C disputabile'', the type species, named by Spath in 1927, which came from the Middle Jurassic of Hungary, is based on ''Phylloceras disputabile'' Zittil. ''Neocalliphylloceras'' Bresairie 1936, ''Captianioceras'' Kuvacs 1939 and ''Euphylloceras'' Draughtchitz 1953 are equivalent genera.

Description

''Calliphylloceras'' has a smooth, compressed involute shell with a rounded venter and periodic constrictions in the internal mold; surface covered with lirae as in '' Phylloceras''. The first and 2nd lateral saddles are usually triphyllic, others diphyllic.

Distribution

This species has been found in the Cretaceous of Bulgaria, Canada, France, Japan, United States and in the Jurassic of Argentina, Austria, Germany, Hungary, India, Iran, Italy, Japan, Madagascar, the Russian Federation, Spain, Turkey, United States

Bibliography

* Imlay 1960. Early Cretaceous (albian) Ammonites from the Chitina Valley and Talkeetna Mountains, Alaska. US Geological Survey PP 354-D

References

;Notes {{Taxonbar, from=Q5022718 Jurassic ammonites Cretaceous ammonites Ammonites of Europe Hettangian genus first appearances Albian genus extinctions Fossil taxa described in 1927 Phylloceratina