Arietites
Arietites is a genus of massive, giant evolute, psiloceratacean ammonites in the family Arietitidae in which whorls are subquadrate and transversely ribbed and low keels in triplicate, separated by a pair of longitudinal grooves, run along the venter. Fossils are known world wide from the lower Sinemurian stage of the Lower Jurassic.
| Arietites | |
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| Arietites bucklandi | |
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| Genus: | Arietites Waagen, 1869 |
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Arietites bucklandi fossil at the Geological Museum in Copenhagen
Similar genera include Megarietites in which the keels are reduced and Epammonites in which the ribs are more closely spaced.
Species
- Arietites ablongaris
- Arietites alcinoe Reynès, 1879
- Arietites anastreptoptychus Franz Wähner, 1891}}, now Paracaloceras subsalinarium Wähner
- Arietites bisulcatus
- Arietites bonnardii Alcide Dessalines d’Orbigny, 1879
- Arietites brookei
- Arietites bucklandi George Brettingham Sowerby, 1816}}
- Arietites crossi
- Arietites gaudryi Reynès
- Arietites geometricus Albert Oppe, 1856
- Arietites hettangiensis
- Arietites isis
- Arietites longicellus Friedrich August Quenstedt, 1858
- Arietites meigeni, now Leptechioceras meigeni
- Arietites meridionalis Reynès
- Arietites obesulus J. F. Blake, 1876
- Arietites obtusus
- Arietites pinguis
- Arietites planaries Reynès, 1879
- Arietites quadratus E. Donovan, 1952
- Arietites radiatus C. T. Simpson, 1843
- Arietites retroversicostatus Canavari
- Arietites rotiformis Sowerby
- Arietites scunthorpense
- Arietites semicostatus A. T. Young & Bird, 1828
- Arietites spiratissimus
- Arietites subsalinarius Wähner, 1891, now Paracaloceras subsalinarium Wähner
- Arietites tenellus C. T. Simpson, 1855
- Arietites turneri
- Arieties westfalicus Lange, now Coroniceras westfalicum Lange, 1925
- 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 .
References
- Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
- [ Arietites] at Fossilworks.org
Further reading
- Arkell, et al. 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology. Geological Soc. of America and Univ. of Kansas Press.
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