# Arietites

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{{Short description|Genus of molluscs (fossil)}}
{{Italic title}}
{{Use dmy dates|date=July 2020}}
{{Automatic_taxobox
|fossil_range = [Early Jurassic](/source/Early_Jurassic), {{fossil range|Sinemurian|ref=<ref name="Sepkoski Ceph">{{cite web
  | last = Sepkoski| first = Jack| title= Sepkoski's Online Genus Database|author-link=| year = 2002| url = http://strata.geology.wisc.edu/jack/showgenera.php?taxon=231&rank=class|access-date= 28 May 2014 }}</ref>}}
|image = Arietites bucklandi - Naturhistorisches Museum, Braunschweig, Germany - DSC05169.JPG
|image_caption = ''Arietites bucklandi''
|taxon = Arietites
|authority = [Waagen](/source/Wilhelm_Heinrich_Waagen), 1869
|synonyms = ''[Coroniceras](/source/Coroniceras)''? <small>Arkell, 1947</small><ref name=FWArietites>[ ''Arietites''] at [Fossilworks](/source/Fossilworks).org</ref>
}}
thumb|right|''Arietites bucklandi'' fossil at the Geological Museum in Copenhagen

'''''Arietites''''' is a genus of massive, giant evolute, [psiloceratacean](/source/Psiloceratoidea) [ammonites](/source/Ammonoidea) in the family [Arietitidae](/source/Arietitidae) in which [whorls](/source/Whorl_(mollusc)) are subquadrate and transversely ribbed and low keels in triplicate, separated by a pair of longitudinal grooves, run along the [venter](/source/Dorsal_and_ventral). Fossils are known world wide from the lower [Sinemurian](/source/Sinemurian) stage of the [Lower Jurassic](/source/Early_Jurassic). [Safari Ltd](/source/Safari_Ltd) made an ''Arietites bucklandi'' figurine in 2014.

Similar [genera](/source/Genus) include ''[Megarietites](/source/Megarietites)'' in which the keels are reduced and ''[Epammonites](/source/Epammonites)''  in which the ribs are more closely spaced.

==Species==
* ''[Arietites ablongaris](/source/Arietites_ablongaris)''
* ''[Arietites alcinoe](/source/Arietites_alcinoe)'' Reynès, 1879
* ''[Arietites anastreptoptychus](/source/Arietites_anastreptoptychus)'' Franz Wähner, 1891 (possibly a synonym of ''[Paracaloceras](/source/Paracaloceras) subsalinarium''; Wähner)
* ''[Arietites bisulcatus](/source/Arietites_bisulcatus)''
* ''[Arietites bonnardii](/source/Arietites_bonnardii)'' Alcide Dessalines d'Orbigny, 1879
* ''[Arietites brookei](/source/Arietites_brookei)''
* ''[Arietites bucklandi](/source/Arietites_bucklandi)'' George Brettingham Sowerby, 1816
* ''[Arietites crossi](/source/Arietites_crossi)''
* ''[Arietites gaudryi](/source/Arietites_gaudryi)'' Reynès
* ''[Arietites geometricus](/source/Arietites_geometricus)'' Albert Oppe, 1856<ref>{{Cite book |last=Gorsel |first=J.T. Van |url=https://www.vangorselslist.com/pdf/BIG_X_Paleontology_7.pdf |title=BIBLIOGRAPHY OF THE GEOLOGY OF INDONESIA AND SURROUNDING AREAS |date=July 2018 |edition=7th |pages=33 |language=English}}</ref>
* ''[Arietites hettangiensis](/source/Arietites_hettangiensis)''
* ''[Arietites isis](/source/Arietites_isis)''
* ''[Arietites longicellus](/source/Arietites_longicellus)'' Friedrich August Quenstedt, 1858
* ''[Arietites meigeni](/source/Arietites_meigeni)'', (possibly a synonym of ''[Leptechioceras](/source/Leptechioceras) meigeni'')
* ''[Arietites meridionalis](/source/Arietites_meridionalis)'' Reynès
* ''[Arietites obesulus](/source/Arietites_obesulus)'' J. F. Blake, 1876
* ''[Arietites obtusus](/source/Arietites_obtusus)''
* ''[Arietites pinguis](/source/Arietites_pinguis)''
* ''[Arietites planaries](/source/Arietites_planaries)'' Reynès, 1879
* ''[Arietites quadratus](/source/Arietites_quadratus)'' E. Donovan, 1952
* ''[Arietites radiatus](/source/Arietites_radiatus)'' C. T. Simpson, 1843
* ''[Arietites retroversicostatus](/source/Arietites_retroversicostatus)'' Canavari
* ''[Arietites rotiformis](/source/Arietites_rotiformis)'' Sowerby
* ''[Arietites scunthorpense](/source/Arietites_scunthorpense)''
* ''[Arietites semicostatus](/source/Arietites_semicostatus)'' A. T. Young & Bird, 1828
* ''[Arietites spiratissimus](/source/Arietites_spiratissimus)''
* ''[Arietites subsalinarius](/source/Arietites_subsalinarius)'' Wähner, 1891, (possibly a synonym of ''[Paracaloceras](/source/Paracaloceras) subsalinarium''; Wähner)
* ''[Arietites tenellus](/source/Arietites_tenellus)'' C. T. Simpson, 1855
* ''[Arietites turneri](/source/Arietites_turneri)''
* ''[Arieties westfalicus](/source/Arieties_westfalicus)'' Lange (possibly a synonym of ''[Coroniceras](/source/Coroniceras) westfalicum'' Lange, 1925)
* ''[Arietites wichmanni](/source/Arietites_wichmanni)'' August Rothpletz, 1892

Note:'' Arietites ''now only represents a purely morphological term. A revision of the genus is still pending, its representatives are therefore initially classified as'' Coroniceras (Arietites)'' under'' [Coroniceras](/source/Coroniceras) ''.

== References ==
{{Reflist}}

== Further reading ==
* Arkell, et al. 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology. Geological Soc. of America and Univ. of Kansas Press.

{{Taxonbar|from=Q3622580}}

Category:Jurassic ammonites
Category:Ammonites of Asia
Category:Ammonites of Europe
Category:Ammonites of North America
Arietites geometricus
Category:Sinemurian life
Category:Sinemurian genus first appearances
Category:Ammonitida genera
Category:Arietitidae

{{Ammonitida-stub}}

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Adapted from the Wikipedia article [Arietites](https://en.wikipedia.org/wiki/Arietites) by Wikipedia contributors ([contributor history](https://en.wikipedia.org/wiki/Arietites?action=history)). Available under [Creative Commons Attribution-ShareAlike 4.0 International](https://creativecommons.org/licenses/by-sa/4.0/). Changes may have been made.