词条 | Gleviceras |
释义 |
| name = Gleviceras | fossil_range = {{fossil range|Sinemurian|ref=[1]}} | image = Oxynoticeratidae - Gleviceras guabalianum.JPG | image_caption = Fossil of Gleviceras guabalianum | regnum = Animalia | phylum = Mollusca | classis = Cephalopoda | subclassis = Ammonoidea | ordo = Ammonitida | superfamilia = Psiloceratoidea | familia = Oxynoticeratidae | genus = Gleviceras | genus_authority = Buckman, 1918 | synonyms =
}} Gleviceras is an ammonite genus (order Ammonitida) that lived during the Early Jurassic Period, found in Canada, Hungary, Mexico and the United Kingdom. Glevumites Buckman 1924, Guibaliceras Buckman 1918, Riparioceras Schindewolf 1962, Tutchericeras Buckman 1919, and Victoriceras Buckman 1918 are considered synonyms. DescriptionGleviceras produced laterally compressed involute shells with a small umbilicus, close spaced sinuous ribbing, and a sharp keel along venter. The suture in ammonitic with deep narrow complex lobes. It is similar to Oxynoticeras except for being less narrow and having a more rounded venter. Fastigiceras differs primarily in having an occluded unbilicus. TaxonomyGleviceras was described by Buckman in 1918 and is included in the Family Oxynoticeratidae and superfamily Psiloceratoidea. Species include:
Gleviceras is closely related to the genera Cheltonia, Hypoxynoticeras, Oxynoticeras, Paracymbites, Paroxynoticeras, Radstockiceras and Slatterites. References1. ^{{cite journal|last=Sepkoski |first=Jack |title=A compendium of fossil marine animal genera (Cephalopoda entry) | journal=Bulletins of American Paleontology |volume=363 |pages=1–560 | year=2002 | url=http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=231&rank=class |accessdate=2017-10-18 |deadurl=yes | archiveurl=https://web.archive.org/web/20080507014300/http://strata.ummp.lsa.umich.edu/jack/showgenera.php?taxon=231&rank=class | archivedate=2008-05-07 |df= }} {{more footnotes|date=July 2014}}
4 : Oxynoticeratidae|Ammonitida genera|Jurassic ammonites|Ammonites of Europe |
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