Sphenarpites

Sphenarpites; Temporal range: Toarcian PreꞒ Ꞓ 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:	†Hildoceratidae
Subfamily:	†Harpoceratinae
Genus:	†Sphenarpites; Spath, 1936
Type species
	Sphenarpites hawkinsi; Spath, 1936

Sphenarpites is an extinct genus of cephalopod belonging to the family Hildoceratidae. Only one specimen is known, which has been found in Kelat, Baluchistan, in today's Pakistan. Its involute, oxycone shell has very small umbilicus and umbilical wall is smoothly rounded. Suture is reduced with 1 or 2 adventitious saddles and about 10 auxiliary saddles in external suture.^[1]

References

^ ^a ^b M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.

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[Howarth2013-1] M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.

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