Sphenarpites

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]

Sphenarpites Temporal range: Toarcian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Hildoceratidae
Subfamily:	†Harpoceratinae
Genus:	†Sphenarpites Spath, 1936
Type species
Sphenarpites hawkinsi Spath, 1936