Berriasella
Berriasella | |
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Fossil shell of Berriasella jabronensis from Gard (France), on display at Galerie de paléontologie et d'anatomie comparée in Paris | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Cephalopoda |
Subclass: | †Ammonoidea |
Order: | †Ammonitida |
Family: | †Neocomitidae |
Subfamily: | †Berriasellinae |
Genus: | †Berriasella Uhlig, 1905 |
Species | |
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Berriasella is a discoidal evolute perisphinctacean ammonite, and type genus for the neocomitid subfamily Berriasellinae. Its ribbing is distinct, consisting of both simple and bifurcated ribs that extend from the umbilical seam across the venter; its whorl section generally compressed, the venter more or less narrowly rounded. The species traditionally has been regarded an index fossil defining the base of the Cretaceous, however since 2016 this had been replaced by the first occurrence of Calpionella alpina.
Berriasella, named by Uhlig, 1905, is known from the late Upper Jurassic, Tithonian, to the early Lower Cretaceous, Berriasian and has a fairly worldwide distribution.[2]
Distribution[]
Fossils of Berriasella have been found in:
- Jurassic
- and , Antarctica
- Los Molles Formation, Argentina
- Guasasa Formation, Cuba
- , Iraq
- Muktinath, Nepal
- , Peru
- , Yemen
- Cretaceous
- , Antarctica
- , China
- , Colombia
- , Czech Republic
- France
- , Hungary
- , India
- , Iran
- , Iraq
- Carbonera and Taraises Formations, Mexico
- and , Poland
- , Russia
- and , Spain
- Dvuyakornaya Formation, Ukraine
- , Yemen
References[]
- ^ Sepkoski, Jack (2002). "A compendium of fossil marine animal genera (Cephalopoda entry)". Bulletins of American Paleontology. 363: 1–560. Archived from the original on 2016-02-25. Retrieved 2017-10-18.
- ^ Paleobiology Database - Berriasella at Fossilworks.org
Further reading[]
- Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
Categories:
- Endemoceratoidea
- Ammonitida families
- Index fossils
- Tithonian first appearances
- Berriasian life
- Early Cretaceous genus extinctions
- Cretaceous ammonites
- Jurassic ammonites
- Ammonites of Asia
- Cretaceous China
- Fossils of China
- Fossils of India
- Fossils of Iraq
- Fossils of Iran
- Fossils of Nepal
- Fossils of Yemen
- Ammonites of Antarctica
- Ammonites of Europe
- Fossils of the Czech Republic
- Cretaceous France
- Fossils of France
- Fossils of Hungary
- Fossils of Poland
- Cretaceous Russia
- Fossils of Russia
- Cretaceous Spain
- Fossils of Spain
- Fossils of Ukraine
- Ammonites of North America
- Jurassic Cuba
- Fossils of Cuba
- Jurassic Mexico
- Cretaceous Mexico
- Fossils of Mexico
- Ammonites of South America
- Jurassic Argentina
- Cretaceous Argentina
- Fossils of Argentina
- Cretaceous Colombia
- Fossils of Colombia
- Jurassic Peru
- Fossils of Peru
- Fossil taxa described in 1905
- Ammonitina stubs