Berriasellinae is a subfamily of very late Jurassic and very early Cretaceous perisphinctoid ammonites in the family

Neocomitidae Neocomitidae is a family of Lower Cretaceous ammonitids comprising genera with strongly ribbed evolute (all whorls exposed) to smooth, fairly involute (inner whorls mostly hidden) shells. In the 1957 description of the family Neocomitidae was r ...

. 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

. The short lived

Himalayitidae Himalayitidae is an extinct family of ammonites in the superfamily Perisphinctoidea. The family existed from the Tithonian of the Jurassic to the Berriasian of the Cretaceous The Cretaceous ( ) is a geological period that lasted from about 145 ...

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 ''Sensu'' is a Latin word meaning "in the sense of". It is used in a number of fields including biology, geology, linguistics, semiotics, and law. Commonly it refers to how strictly or loosely an expression is used in describing any particular co ...

'', as the Neocomitinae. Berriasellinae includes the genera ''

Andiceras ''Andiceras'' is an enigmatic perisphinctacean ammonite belonging to the neocomitid subfamily Berriasellinae. ''Andiceras'' was named by Krantz in 1926 and is known from Tithonian sediments in Argentina and the Chinameca and La Caja Formations ...

'', '' Berriasella'', '' Blanfordiceras'', ''

Delphinella ''Delphinella'' is a genus of fungi belonging to the family Dothioraceae. Species The genus has 7 accepted species: *'' Delphinella abietis'' *''Delphinella balsameae ''Delphinella balsameae'' is a species of fungus in the family Dothiorac ...

'', '' Elenaella'', '' Jabronella'', '' Parandiceras'', '' Raimondiceras'', '' Subalpinites'', '' Substeueroceras'', and '' Tirnovella''.

References

*Arkell, ''et al.'', 1957 Mesozoic Ammonoidea. Treatise 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 Perisphinctoidea Tithonian first appearances Early Cretaceous extinctions {{Ammonitina-stub