Cymbitidae

Cymbitidae; Temporal range: Sinemurian–Pliensbachian PreꞒ Ꞓ O S D C P T J K Pg N
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Superfamily:	†Psiloceratoidea
Family:	†Cymbitidae; Buckman, 1919

Cymbitidae is family of ammonite that lived during Sinemurian and Pliensbachian stages of Lower Jurassic. They have probably evolved from Arietitidae.^[1]

Description[]

Ammonites belonging to this family had shells with sphaeroconic involute inner whorls that later during ontogeny become evolute and last whorl is highly eccentric. They were small and mostly less than 2 cm in diameter. Venter is smooth, fastigate or rounded. There was constriction on aperture. Ornamentation was weak, as shell was smooth or plicate and only rarely there were lateral tubercules.^[1]

Genera[]

Cymbitidae is probably monogeneric family. It is named after genus Neumayr, 1878. One more genus has been added there and it is Fucini, 1907, but this one is probably only a synonym of Cymbites.^[1]

Distribution[]

Ammonites of this family were found in Europe, US and Tunisia.^[1]

References[]

^ ^a ^b ^c ^d ^e M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.

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[Howarth2013-1] M. K. Howarth 2013. Treatise on Invertebrate Paleontology, Part L, Revised, Volume 3B, Chapter 4: Psiloceratoidea, Eoderoceratoidea, Hildoceratoidea.

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