Karagandoceratidae
Encyclopedia
The Karagondoceratidae is a small family of tornoceratin Goniatitida from the Lower Carboniferous (early Mississippian) which typifies the Karagandocerataceae in which it is included.

Karagandoceratids are characterized by discoidal to lenticular shells that are oxyconic or keeled in the adult and in which the ventral lobe of the suture is ontogenetically subdivided, either trifurcated or biburcated.

The known genera are Bartzschiceras, Karagandoceras
Karagandoceras
Karagandoceras is an ammonoid genus belonging to the goniatid family Karagandoceratidae that lived during the early Mississippian .Karagandoceras has an involute, lenticular shell, with an acute ventral margin...

, and Masonoceras, and possibly Voehringerites

References

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