Prionoceratoidea

Prionoceratoidea is a superfamily in the goniatitid suborder, Tornoceratatina that was extant during the latter Paleozoic.

Prionoceratoidea Temporal range: Upper Devonian - Upper Permian PreꞒ Ꞓ O S D C P T J K Pg N
The prionoceratid Imitoceras rotatorium (early Carboniferous)
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Goniatitida
Suborder:	†Tornoceratina
Superfamily:	†Prionoceratoidea Hyatt, 1884
Families
Gattendorfiidae Prionoceratidae Pseudarietitidae Voehringeritidae
Synonyms
Prionocerataceae

The inclusive taxonomy of the Prionoceratoidea varies according to classification. In some, valid families are the Gattendorfiidae, Prionoceratidae, Pseudarietitidae, and Voehringeritidae. Others may add the Acrocanitidae, Cheiloceratidae, Praeglyphioceratidae, and Sporadoceratidae to the list although it is not at all clear that these belong.

References

• GONIAT - Prionocerataceae entry 11-28-11
• Paleobiology Database - Prionocerataceae entry 11-28-11
• Saunders, Work, and Nikolaeva, 1999. Evolution of Complexity in Paleozoic Ammonoid Sutures -Supplementary Material.