Acanthoceratinae

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

Acanthoceratinae
Temporal range: Cretaceous [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

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.

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]

gollark: Presumably it's homework in a particular language.
gollark: Rotate tetrationally.
gollark: No, I mean that they probably won't pay it back immediately at least some of the time.
gollark: Thusly you may need to actually be specific.
gollark: In most cases you'll presumably be lending them money with a significant payback time, or they would just wait a bit to buy thing.

References
  • W.J. Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L. Geological Society of America and University of Kansas Press.
  1. The Paleobiology Database
  2. Arkell, W.J.; Kummel, B.; Wright, C.W. (1957). Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Lawrence, Kansas: Geological Society of America and University of Kansas Press.
  3. Ammonites.fr Acanthoceratinae


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