''Arietites'' is a genus of massive, giant evolute, psiloceratacean ammonites in the family

Arietitidae Arietitidae is a family of true ammonites that make up part of the superfamily Psiloceratoidea, named after the type genus ''Arietites''. They comprise medium-size to large or gigantic genera which in general are strongly ribbed, tuberculate in s ...

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. Safari Ltd made an ''Arietites bucklandi'' figurine in 2014. Similar genera include '' Megarietites'' in which the keels are reduced and '' Epammonites'' in which the ribs are more closely spaced.

Species

* ''

Arietites ablongaris ''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 ...

'' * '' Arietites alcinoe'' Reynès, 1879 * ''

Arietites anastreptoptychus ''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 ...

'' Franz Wähner, 1891 (possibly a synonym of '' Paracaloceras subsalinarium''; Wähner) * ''

Arietites bisulcatus ''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 ...

'' * ''

Arietites bonnardii ''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 ...

'' Alcide Dessalines d’Orbigny, 1879 * ''

Arietites brookei ''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 ...

'' * ''

Arietites bucklandi ''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 ...

'' George Brettingham Sowerby, 1816 * ''

Arietites crossi ''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 ...

'' * ''

Arietites gaudryi ''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 ...

'' Reynès * ''

Arietites geometricus ''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 ...

'' Albert Oppe, 1856 * ''

Arietites hettangiensis ''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 ...

'' * ''

Arietites isis ''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 ...

'' * ''

Arietites longicellus ''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 ...

'' Friedrich August Quenstedt, 1858 * ''

Arietites meigeni ''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 ...

'', (possibly a synonym of '' Leptechioceras meigeni'') * ''

Arietites meridionalis ''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 ...

'' Reynès * ''

Arietites obesulus ''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 ...

'' 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 ''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 ...

'' A. T. Young & Bird, 1828 * ''

Arietites spiratissimus ''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 ...

'' * '' Arietites subsalinarius'' Wähner, 1891, (possibly a synonym of '' Paracaloceras subsalinarium''; Wähner) * ''

Arietites tenellus ''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 ...

'' C. T. Simpson, 1855 * '' Arietites turneri'' * '' Arieties westfalicus'' Lange (possibly a synonym of ''

Coroniceras ''Coroniceras'' is a genus in the Arietitidae, a family in the ammonitid superfamily Psiloceratoidea, from the lower Sinermurian stage in the Lower Jurassic. It is a sub zone ammonite of the '' Arnioceras semicostatum'' Zone. ''Coroniceras'' ha ...

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 ''

''.

Species

References

Further reading