Arietites

Arietites Temporal range: Early Jurassic, Sinemurian[1] PreꞒ Ꞓ O S D C P T J K Pg N
Arietites bucklandi
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Superfamily:	†Psiloceratoidea
Family:	†Arietitidae
Genus:	†Arietites Waagen, 1869
Synonyms
Coroniceras? Arkell, 1947[2]

Arietites bucklandi fossil at the Geological Museum in Copenhagen

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. Safari Ltd made an Arietites bucklandi figurine in 2014.

Similar genera include in which the keels are reduced and in which the ribs are more closely spaced.

Species[]

• Arietites ablongaris
• Reynès, 1879
• Franz Wähner, 1891 (possibly a synonym of subsalinarium; Wähner)
• Alcide Dessalines d’Orbigny, 1879
• George Brettingham Sowerby, 1816
• Reynès
• Albert Oppe, 1856
• Friedrich August Quenstedt, 1858
• , (possibly a synonym of meigeni)
• Reynès
• J. F. Blake, 1876
• Reynès, 1879
• E. Donovan, 1952
• C. T. Simpson, 1843
• Canavari
• Sowerby
• A. T. Young & Bird, 1828
• Wähner, 1891, (possibly a synonym of subsalinarium; Wähner)
• C. T. Simpson, 1855
• Lange (possibly a synonym of Coroniceras westfalicum Lange, 1925)
• 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[]

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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