Tornocerataceae
Encyclopedia
Tornoceratoidea, formerly Tornocerataceae, is a superfamily of goniatitid ammonoids included in the suborder Tornoceratina.. Tornoceratoidea is essentially the Cheilocerataceae of Miller, Furnish, and Schindewolf (1964) in the Treatise on Invertebrate Paleontology, revised to accommodate new taxa and a new perspective on the phylogeny.
, Parodoceratidae
, Posttornoceratidae
, Pseudoclymediidae, and Kirsoceratidae
, some of which have been recently established.
Tornoceratidae which is essentially the Tornoceratidae taxa placed within the Cheiloceratacea in the Treatise, vol L, split as a result of new studies and discoveries into three subfamilies, the Tornnoceratinae, Aulatornoceratinae
and Falcitornoceratinae
. Tornoceratinae are the oldest and include such genera as Tornoceras
, Lobotornoceras and Simicheiloceras among others. Derived from the Tornoceratinae are the Aulatornoceratinae, based on Aulatornoceras
, and Falcitornoceratinae, based on Falcitornoceras
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, Croyites and Trevoneites were added, respectively by Korn in 2001 and by Becker and House in 1994.
Posttornoceratidae is a small family of tornocerins
, split into two subfamilies the Posttornoceratinae
and Discoclymeniinae
, based on Posttornoceras and Discoclymenia. The family was originally included in the Tornoceratidae by Miller et al.
Pseudoclymeniidae is a family of tornocerids 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. Pseudoclymenia is like Tornoceras
except that it characteristically has a narrower shell with a wide umbilicus
Kirsoceratidae, named by Korn in 2002 and assigned to the Tornoceratoidea in 2006, is based on Kirsoceras described by Bogoslovsky in 1971. The family contains four genera Kirsoceras, Pernoceras, Proternoceras, and Tornia. Kirsoceras is derived from Aulatornoceras (Aulatornoceratinae) through Polonoceras. Polonoceras also gave rise to Pernoceras. Tornia on the othe hand is derived from Proternoceras which is derived from Tornoceras.
Taxomomy
Tornoceratoidea includes five families, TornoceratidaeTornoceratidae
Tornoceratidae is a family of goniatitid ammonoinds from the middle and upper Devonian The family is included in the suborder Tornoceratinaand the superfamily Tornoceratoidea....
, Parodoceratidae
Parodoceratidae
Parodoceratidae is one of five families of the Tornocerataceae Superfamily, 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 more distantly to the nautiloids.-References:* accessed...
, Posttornoceratidae
Posttornoceratidae
The Posttornoceratidae are Late Devonian goniatites included in the superfamily Tornocerataceae. The Family, Posttornoceratidae, named by Bogoslovsky in 1962, is based on the genus Posttornoceras, named by Wedekind in 1910, originally included in the Tornoceratidae The Posttornoceratidae are Late...
, Pseudoclymediidae, and Kirsoceratidae
Kirsoceratidae
Kirsoceratidae is one of five families of the Tornocerataceae Superfamily, 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 more distantly to the nautiloids.-References:* accessed...
, some of which have been recently established.
Tornoceratidae which is essentially the Tornoceratidae taxa placed within the Cheiloceratacea in the Treatise, vol L, split as a result of new studies and discoveries into three subfamilies, the Tornnoceratinae, Aulatornoceratinae
Aulatornoceratinae
Aulatornoceratinae is one of three subfamilies of the family Tornoceratidae, in the order Goniatitida. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.-References:* accessed on...
and Falcitornoceratinae
Falcitornoceratinae
Falcitornoceratinae is one of three subfamilies of the Tornoceratidae 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 more distantly to the nautiloids.-References:* ...
. Tornoceratinae are the oldest and include such genera as Tornoceras
Tornoceras
Tornoceras is a strongly involute, subdiscoidal Middle and Upper Devonian goniatite with a suture that forms six to ten lobes.Aulatornoceras, Protornoceras, Epitornoceras, Lobotornoceras are among related genera included in the Tornoceratidae. Inclusion however varies from classification to...
, Lobotornoceras and Simicheiloceras among others. Derived from the Tornoceratinae are the Aulatornoceratinae, based on Aulatornoceras
Aulatornoceras
Aulatornoceras is a genus belonging to the Aulatornoceratinae subfamily, 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 more distantly to the nautiloids.-References:* accessed on...
, and Falcitornoceratinae, based on Falcitornoceras
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, Croyites and Trevoneites were added, respectively by Korn in 2001 and by Becker and House in 1994.
Posttornoceratidae is a small family of tornocerins
Tornoceratina
Tornoceratatina is one of two suborders of the Goniatitida order. They are an extinct group of ammonoid, which are shelled cephalopods related to squids, belemnites, octopuses, and cuttlefish, and more distantly to the nautiloids.-References:...
, split into two subfamilies the Posttornoceratinae
Posttornoceratinae
Posttornoceratinae 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 more distantly to the nautiloids.-References:* ...
and Discoclymeniinae
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 more distantly to the nautiloids.-References:* accessed...
, based on Posttornoceras and Discoclymenia. The family was originally included in the Tornoceratidae by Miller et al.
Pseudoclymeniidae is a family of tornocerids 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. Pseudoclymenia is like Tornoceras
Tornoceras
Tornoceras is a strongly involute, subdiscoidal Middle and Upper Devonian goniatite with a suture that forms six to ten lobes.Aulatornoceras, Protornoceras, Epitornoceras, Lobotornoceras are among related genera included in the Tornoceratidae. Inclusion however varies from classification to...
except that it characteristically has a narrower shell with a wide umbilicus
Kirsoceratidae, named by Korn in 2002 and assigned to the Tornoceratoidea in 2006, is based on Kirsoceras described by Bogoslovsky in 1971. The family contains four genera Kirsoceras, Pernoceras, Proternoceras, and Tornia. Kirsoceras is derived from Aulatornoceras (Aulatornoceratinae) through Polonoceras. Polonoceras also gave rise to Pernoceras. Tornia on the othe hand is derived from Proternoceras which is derived from Tornoceras.