Acanthoceratinae

Acanthoceratinae Temporal range: Cretaceous PreꞒ Ꞓ O S D C P T J K Pg N [1]
Acanthoceras rhotomagensis from France.
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Family:	†Acanthoceratidae
Subfamily:	†Acanthoceratinae Grossouvre, 1894
Genera
See text

The Acanthoceratinae comprise a subfamily of ammonoid cephalopods that lived during the Late Cretaceous from the latter early Cenomanian to the late Turonian

Shells are evolute, tuberculate and ribbed, with subquadrate to squarish whorl section wherein tubercles typically dominate over ribs. Derivation is from the in the early Cenomanian. Gave rise through Neocardioceras to the Mammitinae.

Genera[]

The following genera are included in the Acanthoceratinae according to various sources as indicated.

• Acanthoceras Neumayer, 1875^[2][3]
• Acompsoceras Hyatt, 1903 ^[3]
• Benueites Reyment, 1954
• Calycoceras Hyatt, 1900 ^[3][1]
• Conlinoceras Cobban & Scott, 1972^[3]
• Cunningtoniceras Collignon, 1937^[3][1]
• Eucalycoceras Spath, 1923^[1]
• Spath, 1923^[1]
• Kennedy & Cobban, 1988^[1]
• Neocardioceras Spath, 1926^[2]
• Schneegan, 1943^[3]
• Spath, 1923^[2]
• Thomel, 1969^[3]
• Quitmaniceras Powell, 1963^[1]
• Watinoceras Warren, 1930^[3] (Watinoceras has also been classified under Mammitinae)

Distribution[]

Fossils of species within the Acanthoceratinae have been found in Upper Cretaceous sediments in Angola, Antarctica, Australia, Brazil, Canada, Denmark, Egypt, France, Germany, Japan, Jordan, Madagascar, Mexico, Nigeria, Oman, Peru, Russia, Switzerland, United Kingdom, United States and Venezuela.^[1]

References[]

• W.J. Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press.

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