Oxynoticeratidae HYATT, 1875


Faune

Dactylioceratidae

Couples

Eoderoceratidae

Liparoceratidae

Oxynoticeratidae

Juraphyllitidae

Lytoceratidae

Polymorphitidae

Family Oxynoticeratidae

The shells of the various representatives of this family are typically oxycone and involute. The ornamentation, often non-existent, is limited sometimes to a weak costulation. Their horizontal distribution is very broad (the whole world) and their vertical distribution covers two stages: Sinemurian and Pliensbachian. In the lower Pliensbachian of our area, Oxynoticeratidae count among the rare families. Only the species Radstockiceras has been collected.

Radstockiceras cf. gemmelaroi (Pompj.) Ø 66 mm

Genus Radstockiceras

This genus contains oxycone ammonites with feebly ornamentation or nearly smooth and involute shells. A sharp keel follows the venter.