Agathiceratidae
Encyclopedia
The Agathiceratidae as revised makes up the goniatitid superfamily Agathicerataceae. The Agathiceratidae, which lived from the Upper Carboniferous
(Pennsilvanian) to the Middle Permian
, combine related genera with subdiscoidal to globular shells that have a small umbilicus and goniatitic sutures and are prominently longitudinally lirate. (Miller et al. 1960) The explanation for the Agathiceratidae is that for the Agathicerataceae.
The Agathiceratidae may have its origin in Dombarites
(Saunders et al. 1999) which has been removed to the Delepinoceratidae
(Furnish et al. 2009). The Delepinoceratidae is now one of two families that make up the Goniatitiaceae.
In the current taxonomy (Furnish et al. 2009) The Agathiceratidae contains Agathiceras
, Gaetanoceras, Paragathiceras, and Pericleites as compared to Dombarites
, Paracravenoceras, Periclietes, Proshumardites, and Agathiceras in Saunders et al. (1999). Paracravenoceras is now placed in the Gastrocerataceae, Proshunardites combined with Dombaritesin the Delepinoceratidae. The two added genera, Gaetanoceras and Paragathiceras, were considered as equivalent to Agathiceras in Miller et al. (1960).
Carboniferous
The Carboniferous is a geologic period and system that extends from the end of the Devonian Period, about 359.2 ± 2.5 Mya , to the beginning of the Permian Period, about 299.0 ± 0.8 Mya . The name is derived from the Latin word for coal, carbo. Carboniferous means "coal-bearing"...
(Pennsilvanian) to the Middle Permian
Permian
The PermianThe term "Permian" was introduced into geology in 1841 by Sir Sir R. I. Murchison, president of the Geological Society of London, who identified typical strata in extensive Russian explorations undertaken with Edouard de Verneuil; Murchison asserted in 1841 that he named his "Permian...
, combine related genera with subdiscoidal to globular shells that have a small umbilicus and goniatitic sutures and are prominently longitudinally lirate. (Miller et al. 1960) The explanation for the Agathiceratidae is that for the Agathicerataceae.
The Agathiceratidae may have its origin in Dombarites
Dombarites
Dombarites is a genus belonging to the goniatitid family Agathiceratidae; extinct ammonoids which are shelled cephalopods more closely related to squid , octopus and other coleoids than to the superficially similar Nautilus...
(Saunders et al. 1999) which has been removed to the Delepinoceratidae
Delepinoceratidae
Delepinoceratidae is one of three families of the Goniatitaceae superfamilies. 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:...
(Furnish et al. 2009). The Delepinoceratidae is now one of two families that make up the Goniatitiaceae.
In the current taxonomy (Furnish et al. 2009) The Agathiceratidae contains Agathiceras
Agathiceras
Agathiceras is a subglobose goniatitid from the family Agathiceratidae, widespread and locally abundant in Lower Pennsylvanian to Middle Permian sediments, e.g. the Urals, Sicily, and Texas....
, Gaetanoceras, Paragathiceras, and Pericleites as compared to Dombarites
Dombarites
Dombarites is a genus belonging to the goniatitid family Agathiceratidae; extinct ammonoids which are shelled cephalopods more closely related to squid , octopus and other coleoids than to the superficially similar Nautilus...
, Paracravenoceras, Periclietes, Proshumardites, and Agathiceras in Saunders et al. (1999). Paracravenoceras is now placed in the Gastrocerataceae, Proshunardites combined with Dombaritesin the Delepinoceratidae. The two added genera, Gaetanoceras and Paragathiceras, were considered as equivalent to Agathiceras in Miller et al. (1960).