Biology:Urakawites

Urakawites Temporal range: Campanian PreЄ Є O S D C P T J K Pg N
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Pachydiscidae
Genus:	†Urakawites Matsumoto, 1955

Urakawites is an extinct ammonite from the Upper Cretaceous (Campanian) of Japan, Sakhalin, Russia, British Columbia, Canada and possibly Germany and Angola. Urakawites is placed in the family is Pachydiscidae.

Urakawites is characterized by a bituberculate (meaning it has two rows of tubercles on either side), strongly ribbed, moderately compressed shell.

References

• Arkell, et al., 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology Part L. Geol Soc of America and Univ Kansas Press. R.C. Moore ed.
• Matsumoto, T. 1955. The bituberculate pachydiscids from Hokkaido and Saghalien. Studies on the Cretaceous ammonites from Hokkaido and Sakhalin 8. Memoirs of the Faculty of Science, Kyushu University, Series D, vol. 5, no. 3, pp. 153–184
• Urakawites rotalinoides (Yabe)

Wikidata ☰ Q7899582 entry