Karagandoceras
Encyclopedia
Karagandoceras is an ammonoid genus belonging to the goniatid family Karagandoceratidae
that lived during the early Mississippian (lowerCarboniferous
).
Karagandoceras has an involute, lenticular shell, with an acute ventral margin. The ventral lobe of the suture is wide with subparallel to divergent sides, divided by a median saddle with a relatively wide median lobe.
Karagandoceratids, which include Karagandoceras and Mesonoceras are a rare offshoot of the Prionorceratinae that differ from their parent group by possession of an acute ventral margin and an increasingly trifid ventral lobe.
Karagandoceratidae
The Karagondoceratidae is a small family of tornoceratin Goniatitida from the Lower Carboniferous which typifies the Karagandocerataceae in which it is included....
that lived during the early Mississippian (lowerCarboniferous
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"...
).
Karagandoceras has an involute, lenticular shell, with an acute ventral margin. The ventral lobe of the suture is wide with subparallel to divergent sides, divided by a median saddle with a relatively wide median lobe.
Karagandoceratids, which include Karagandoceras and Mesonoceras are a rare offshoot of the Prionorceratinae that differ from their parent group by possession of an acute ventral margin and an increasingly trifid ventral lobe.