Cravenoceratidae
Encyclopedia
The Cravenoceratidae is one of six families
included in the ammonoid superfamily Neoglyphiocerataceae
, which lived during the latter part of the Paleozoic
era.
Cravenoceratid genera have moderately evolute to involute, broad or thickly discoidal shells with a moderately narrow umbilicus. The surface is generally smooth, dominated by growth striae. Spiral ornamentation may be present, but reticulate ornament is absent.
The ventral lobe is double pronged and relatively narrow, with the median saddle in most forms less than half of height of entire lobe itself.
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...
included in the ammonoid superfamily Neoglyphiocerataceae
Neoglyphiocerataceae
Neoglyphiocerataceae is one of seventeen superfamilies of the Goniatitina suborder. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopodes, and cuttlefish, and more distantly to the nautiloids....
, which lived during the latter part of the Paleozoic
Paleozoic
The Paleozoic era is the earliest of three geologic eras of the Phanerozoic eon, spanning from roughly...
era.
Cravenoceratid genera have moderately evolute to involute, broad or thickly discoidal shells with a moderately narrow umbilicus. The surface is generally smooth, dominated by growth striae. Spiral ornamentation may be present, but reticulate ornament is absent.
The ventral lobe is double pronged and relatively narrow, with the median saddle in most forms less than half of height of entire lobe itself.