Parapuzosia (Austiniceras)

Parapuzosia Temporal range:
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Ammonoidea
Order:	Ammonitida
Suborder:	Ammonitina
Superfamily:	Desmoceratoidea
Family:	Desmoceratidae
Genus:	Parapuzosia
Subgenus:	Austiniceras Spath 1922
Species
see text

Austiniceras is a subgenus of Parapuzosia, the shell of which is commonly large, moderately involute, high whorled, with flat or convex sides that converge on a narrowly rounded venter. Primary ribs are signoid or concave. Constrictions where present are rather shallow. The related subgenus P. Parapuzosia differs in having a more oval whorl section, stronger and straighter primary ribs, and a smooth outer whorl.

Parapuzosia (Austiniceras) has a rather long temporal range. It is known from Lower Cenomanian to Upper Turonian sediments in western Europe and from the Coiniaian to the Campanian of Madagascar, and is recorded from Japan, North Aftrica, and North America (Texas).

References

• Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
• Kennedy, W.J., Chahida M.R., and Djafarian M.A. Cenomanian cephalopods from the Glauconitic Limestone southeast of Esfahan, Iran. Acta Palaeontoligica Polonica, 24, I, 3-50, April 20, 1979.