| 词条 | Berniceras |
| 释义 |
|name = Berniceras |fossil_range = {{fossil range|Oxfordian|ref=[1]}} |regnum = Animalia |phylum = Mollusca |classis = Cephalopoda |subclassis = Ammonoidea |ordo = Ammonitida |familia = Oppeliidae |genus = Berniceras |genus_authority = |subdivision_ranks = Species [2] |subdivision = See text }} Berniceras is an extinct ammonite genus from the order Ammonitida that lived during the early Oxfordian stage of the Late Jurassic.[1] Berniceras is included in the ammonite (sensu stricto) family, Oppeliidae. Bernceras, which has been found in Europe, has a moderately enlarging, ribbed, involute shell with a keel along the venter, which forms the outer rim. The ribs are formed on the outer flanks and curve forward ventrally. DistributionJurassic of France [2] References
1. ^1 {{cite web | last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database|authorlink =| coauthors =| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class| accessdate = 2014-05-28 }} 2. ^1 Paleobiology Database - Berniceras. 2014-05-29.
3 : Late Jurassic ammonites of Europe|Oxfordian life|Fossils of France |
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