Paratornoceratinae

From Wikipedia, the free encyclopedia

Paratornoceratinae
Temporal range: Devonian
Scientific classification e
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Goniatitida
Family: Dimeroceratidae
Subfamily: Paratornoceratinae
Ebbighausen, Becker, & Bockwinkel, 2002
Genera

Paratornoceratinae is a subfamily of oxyconic dimeroceratids included in the order Goniatitida, a group of Paleozoic ammonoids, which have closer affinity to living coleoids than to Nautilus.

Paratornoceratinae as defined by Ebbighausen, Becker, & Bockwinkel in 2002 comprises three recognised genera with sharp, oxyconic, venters; Acrimeroceras, , and . The shell, as described for the type, Paratornoceras, is subglobular and evolute on young stages, but discoidal and with closed umbilicus in the adult.

References[]


Retrieved from ""