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Berriasellinae is a subfamily of very late Jurassic and very early Cretaceous perisphinctoid ammonites in the family Neocomitidae. Berriasellinae comprises generally compressed, evolute genera, typically with furcated ribbing, and in some a smooth ventral band or groove. Berriasellinae are derived from the Ataxioceratidae and gave rise to the other Neocomitidae. The short lived Himalayitidae from the uppermost Jurassic have a similar appearance but differ in being generally broader and having sharper ribbing. In current classifications (e.g. Donovan ''et al.'' 1981) berriasellid perisphinctaceans are included in the Neocomitidae as a subfamily, the Berriasellinae. In older classification such as the Treatise on Invertebrate Paleontology, part L (1957), neocomitid genera are included in the Berriasellidae, ''sensu lato'', as the Neocomitinae. Berriasellinae includes the genera ''Andiceras'', ''Berriasella'', ''Blanfordiceras'', ''Delphinella'', ''Elenaella'', ''Jabronella'', ''Parandiceras'', ''Raimondiceras'', ''Subalpinites'', ''Substeueroceras'', and ''Tirnovella''. ==References== *Arkell, ''et al.'', 1957 Mesozoic Ammonoidea. Treasise on Invertebrate Paleontology, Part L. Geological Society of Americia and University of Kansas press. *Donovan, Callomon and Howarth 1981. Classification of the Jurassic Ammonitina; Systematics Association. () *(Paleobiology Database Berriasellinae entry ) accessed 11/26/10 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Berriasellinae」の詳細全文を読む スポンサード リンク
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