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 Mantellicertinae 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 Acompsoceras Hyatt, 1903 Alzadites Benueites Reyment, 1954 Calycoceras Hyatt, 1900 Conlinoceras Cobban & Scott, 1972 Cunningtoniceras Collignon, 1937 Eucalycoceras Spath, 1923 Hypacanthohoplites Spath, 1923 Kastanoceras Kennediella Microsulcatoceras Nebraskites Kennedy & Cobban, 1988 Neocardioceras Spath, 1926 Nigericeras Schneegan, 1943 Paraconlinoceras Plesiacanthoceratoides Prohauericeras Protacanthoceras Spath, 1923 Pseudocalycoceras Thomel, 1969 Pseudovascoceras Quitmaniceras Powell, 1963 Sumitomoceras Tarrantoceras Tunesites Thomelites Watinoceras Warren, 1930 (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.
References W.J. Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press.