Radstockiceras is an extinct genus of lower Jurassic ammonite that lived from Oxynotum zone of Sinemurian to Raricostatum zone of Pliensbachian. Shells of these animals were oxycone and involute with umbilicus that took maximum of 12% of diameter in the case of outer whorls. On inner whorls, venter has been sharp, but then it became rounded. Faint ribs had falcoid shape, but sometimes, ribs could absent. Shells could have been large in their size. Suture has been very complex, similar to Oxynoticeras, but culmination at umbilical margin has been missing.[ Genus has been named after town of Radstock, in Somerset.][Schlegelmilch, R. (1992). Die Ammoniten des süddeutschen Lias: ein Bestimmungsbuch für Fossiliensammler und Geologen. Springer Spektrum.]
Distribution
Fossils belonging to this genus are found in Europe, South America, North Africa and Turkey.[ Radstockiceras on the Paleobiology Database.]
