Aulatornoceratinae is one of three

subfamilies In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end subfamily botanical names with "-oideae", and zoologi ...

of the goniatitid family

Tornoceratidae Tornoceratidae is a family of goniatitid ammonoids from the middle and upper Devonian. The family is included in the suborder Tornoceratina and the superfamily Tornoceratoidea. Tornoceratids are subdiscoidal goniatitids with biconvex growth l ...

, an extinct order of Paleozoic

ammonoid Ammonoids are a group of extinct marine mollusc animals in the subclass Ammonoidea of the class Cephalopoda. These molluscs, commonly referred to as ammonites, are more closely related to living coleoids (i.e., octopuses, squid and cuttlefish) ...

cephalopods. ''Aulotornoceratinae'' was established as a subfamily by R.T.Becker, 1993, initially for '' Aulatornoceras'', named by Schindewolf, 1922. Subsequently, four other genera have been added. Members (genera) of the Aulotornoceratinae are known from the Late/Upper Devonian of Western Australia and Alsace, France. In France their fossils are found in well bedded pelagic (deep ocean) limy mudstones,

Frasnian The Frasnian is one of two faunal stages in the Late Devonian Period. It lasted from million years ago to million years ago. It was preceded by the Givetian Stage and followed by the Famennian Stage. Major reef-building was under way during th ...

in age, with a paleolatatude of about 32° south. Current latitude is 43.4° N. In Western Australia, in Canning Basin, they are found in Frasnian and

Famennian The Famennian is the latter of two faunal stages in the Late Devonian Epoch. The most recent estimate for its duration estimates that it lasted from around 371.1 million years ago to 359.3 million years ago. An earlier 2012 estimate, still used b ...

, (Upper Devonian), marginal slope and basinal facies related to reef complexes. Paleolatitudes are about 20° S. Current latitude is 18.0° S. Shells of the type genus '' Aulatornoceras'' are involute, widely to narrowly umbilicate, with strongly biconvex growth lines. The suture is goniatitic.

References

Aulatronoceratinae
in Paleobiology Database, 6/10/12 *Aulatornoceratinae i

6/10/12 Tornoceratidae Prehistoric animal subfamilies Late Devonian first appearances Late Devonian animals Famennian extinctions {{Goniatitida-stub