Tornoceratoidea, also known as
Tornocerataceae, is a superfamily of goniatitid ammonoids included in the suborder Tornoceratina.
Tornoceratoidea, or Tornocerataceae, is essentially the
Cheilocerataceae of Miller, Furnish, and Schindewolf (1957) in the
Treatise
A treatise is a formal and systematic written discourse on some subject, generally longer and treating it in greater depth than an essay, and more concerned with investigating or exposing the principles of the subject and its conclusions."Treat ...
Part L, revised to accommodate new taxa and new perspectives on the phylogeny.
Taxonomy
Tornoceratoid genera are divided among five families,
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 ...
,
Parodoceratidae,
Posttornoceratidae,
Pseudoclymediidae, and
Kirsoceratidae, some of which have been recently established.
Tornoceratidae, essentially the Tornoceratidae of the Treatise, Part L, 1957, included in the Cheilocerataceae is split as a result of new discoveries into three subfamilies, the
Tornnoceratinae,
Aulatornoceratinae and
Falcitornoceratinae
Falcitornoceratinae is one of three subfamilies of the Tornoceratidae family, a member of the Goniatitida
Goniatids, informally goniatites, are Ammonoidea, ammonoid cephalopods that form the order Goniatitida, derived from the more primitive A ...
, of which the Tornoceratinae is the oldest.
Parodoceratidae, proposed by Petter in 1959 is based on the genus ''
Parodoceras'', which along with ''
Wedekindella'', was placed originally in the
Anarcestidae.' 'Parodiceras'' was described by Wedekind in 1913, ''Wededkindella'' by Schindewolf in 1928. The other two genera, ''
Croyites'' and ''
Trevoneites'' were added, respectively by Korn in 2001 and by Becker and House in 1994.
Posttornoceratidae is a small family of tornoceratoids, split into two subfamilies the
Posttornoceratinae and
Discoclymeniinae
Discoclymeniinae is one of two subfamilies of the Posttornoceratidae family, 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 mo ...
, based on ''
Posttornoceras'' and ''
Discoclymenia''. The family was originally included in the Tornoceratidae by Miller et al.
Pseudoclymeniidae is a family of tornoceroids containing a single genus, ''
Pseudoclymenia'', named by Frech in 1897 and split off from the Tornoceratidae of Miller et al. by Becker in 1993. Both the genus, and family were assigned to the Tornoceratoidea by Korn in 2006.
Kirsoceratidae, named by Korn in 2002 and assigned to the Tornoceratoidea in 2006, is based on ''
Kirsoceras'' described by Bogoslovsky in 1971.
References
* Miller, Furnish, and Shindewolf (1964) Paleozoic Ammonoidea; in the ''Treatise on Invertebrate Paleontology'', vol L, Mollusca Ammonoidea; GSA and University of Kansas press.
*Saunders, Work, and Nikoleava, 1999, Evolution of Complexity in Paleozoic Ammonoid Sutures, Supplementary Material. Science magazin
Tornocerataceae
in the Paleobiology Database 6/11/12
Tornoceratoidea,
Tornoceratina
Goniatitida superfamilies
Middle Devonian first appearances
Famennian extinctions
{{Goniatitida-stub