“Coilopoceratidae”的意思、由来-开放百科全书

词条

Coilopoceratidae

释义

Genera
References

{{Automatic taxobox
| fossil_range = {{Fossilrange|Albian|Turonian}}
| image = Placenticeras costatum, Cretaceous, Pierre Shale Formation, Cheyenne River, Pennington County, South Dakota, USA - Houston Museum of Natural Science - DSC02011.JPG
| image_caption = Herrickiceras costatus (Placenticeras costatum)
| taxon = Coilopoceratidae
| authority = Hyatt, 1903
| subdivision_ranks = Genera
| subdivision =

See text

}}{{Commonscat}}

Coilopoceratidae is a family of generally large, proper ammonites with strongly involute shells from the Cretaceous, Albian to Turonian. Coilopoceratids have variably compressed shells with flattish to broadly rounded sides and narrowly rounded to sharp keel-like venters. Whorl sections are generally lanceolate. The suture is ammonitic with an overall clumpy appearance.

The Coilopoceratidae are derived from the Tissotiidae by a secondary re-development of an ammonitic suture and of more narrowly compressed shells.

Genera

Coilopoceras Hyatt, 1903 (synonym = Glebosoceras Reyment, 1954) - from north and west Africa, Syria, Baluchistan, and western North America (Colorado, New Mexico, Texas).
Herrickiceras Cobban & Hook, 1980 - from Western North America, central Africa, and the Middle East.
Hoplitoides von Koenen, 1898 – from north and west Africa, Syria, Columbia, Peru, western North America.

References

{{cite book| first1=W.J. |last1=Arkell |first2=B. |last2=Kummel |first3=C.W. |last3=Wright |series=Treatise on Invertebrate Paleontology, Part L, Mollusca 4| title=Mesozoic Ammonoidea | publisher=Geological Society of America and University of Kansas Press |location=Lawrence, Kansas|year=1957}}
Paleobiology Database Coilopoceratidae entry

4 : Ammonitida families|Acanthoceratoidea|Turonian first appearances|Coniacian extinctions

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