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