Platyceratidae
Encyclopedia
Platyceratidae is an extinct family
of Paleozoic
gastropods of uncertain position in the clade Neritimorpha
(according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005
). Platyceras and other platyceratid gastropods are known for the complex symbiotic relationships they had with crinoids.
This is the only family in the superfamily Platyceratoidea.
Family (biology)
In biological classification, family is* a taxonomic rank. Other well-known ranks are life, domain, kingdom, phylum, class, order, genus, and species, with family fitting between order and genus. As for the other well-known ranks, there is the option of an immediately lower rank, indicated by the...
of Paleozoic
Paleozoic
The Paleozoic era is the earliest of three geologic eras of the Phanerozoic eon, spanning from roughly...
gastropods of uncertain position in the clade Neritimorpha
Neritimorpha
Neritimorpha is a taxonomic grouping, an unranked clade of snails, gastropod mollusks. This grouping includes land snails, sea snails, some deepwater limpets, and also freshwater snails...
(according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005
Taxonomy of the Gastropoda (Bouchet & Rocroi, 2005)
The taxonomy of the Gastropoda as it was revised by Philippe Bouchet and Jean-Pierre Rocroi is currently the most up-to-date overall system for classifying gastropod mollusks...
). Platyceras and other platyceratid gastropods are known for the complex symbiotic relationships they had with crinoids.
This is the only family in the superfamily Platyceratoidea.
Genera
- PlatycerasPlatycerasPlatyceras is a genus of extinct Paleozoic gastropods in the family Platyceratidae known from the Ordovician to the Permian periods. It is the type genus of the family Platyceratidae.- Description :...
Conrad, 1840 - type genusType genusIn biological classification, a type genus is a representative genus, as with regard to a biological family. The term and concept is used much more often and much more formally in zoology than it is in botany, and the definition is dependent on the nomenclatural Code that applies:* In zoological... - Palaeocapulus Grabau & Shimer, 1909