Hexagonites

Hexagonites Temporal range: Permian
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	Nautiloidea
Order:	Nautilida
Family:	†Tainoceratidae
Genus:	†Hexagonites Hayasaka, 1947

Hexagonites is an extinct genus from the nautiloid order, Nautilida which includes the genus Nautilus currently found living in the tropical western Pacific. Hexagonites is included in the family Tainoceratidae, part of the superfamily Tainoceratoidea (Kummel, 1964)

Hexagonites is based on an incomplete, crushed specimen from the Permian of China. Its shell is very evolute, with an hexagonal whorl section, and six rows of tubercles, in pairs on the ventrolateral and dorsolateral shoulders. The suture has shallow lobes. (ibid)

References

• Kummel,B. 1964. Nautilioidea - Nautilida, in the Treatise on Invertebrate Paleontology, Part K Nautiloidea, Geological Society of America and University of Kansas press.
• Sepkosk's list of Cephalopod genera