Prionoceratoidea is a
superfamily
SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ...
in the
goniatitid suborder,
Tornoceratatina that was
extant
Extant is the opposite of the word extinct. It may refer to:
* Extant hereditary titles
* Extant literature, surviving literature, such as ''Beowulf'', the oldest extant manuscript written in English
* Extant taxon, a taxon which is not extinct, ...
during the latter Paleozoic.
The inclusive taxonomy of the Prionoceratoidea varies according to classification. In some, valid families are the
Gattendorfiidae
Gattendorfiidae is one of seven families of the superfamily Prionoceratoidea, a member of the Goniatitida order. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and m ...
,
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 entry11-28-11
Paleobiology Database - Prionocerataceae entry11-28-11
*Saunders, Work, and Nikolaeva, 1999. Evolution of Complexity in Paleozoic Ammonoid Sutures -Supplementary Material.
Prionocerataceae,
Tornoceratina
Goniatitida superfamilies
{{Goniatitida-stub