Acanthoceratidae

Acanthoceratidae
Mantelliceras tuberculatum
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Cephalopoda
Subclass:	†Ammonoidea
Order:	†Ammonitida
Superfamily:	†Acanthoceratoidea
Family:	†Acanthoceratidae Grossouvre, 1894
Subfamilies
See text
Synonyms
Buchiceratidae Hyatt, 1903 Metoicoceratidae Hyatt, 1903

Acanthoceratidae is an extinct family of acanthoceratoid cephalopods in the order Ammonitida, known from the Upper Cretaceous. The type genus is Acanthoceras.

Diagnosis

Acanthoceratidae species are strongly tuberculate with at least umbilical and ventrolateral tubercles in most genera included. Ribs are dominant in some, in others weak or absent on the outer whorls. Most are evolute, compressed to very depressed in section. Sutures are ammonitic with little variation, but showing a tendency for simplication in later genera.

Taxonomy

Acanthoceratidae de Grossouvre, 1894 includes the following subfamilies.

• Acanthoceratinae de Groussouvre, 1894
• Euomphaloceratinae Cooper, 1978
• Mammitinae (Hyatt, 1900) (= Fallotitinae Wiedmann, 1960; Mitoniainae Renz & Alvarez, 1979)
• Mantelliceratinae Hyatt, 1903

References

• Wright, W.C. 1957 Family Acanthoceratidae Hyatt in W.J. Arkell, et al. 1957. Mesozoic Ammonoidea;. Treatise on Invertebrate Paleontology, Part L. Geological Society of America, R.C. Moore (ed).
• The Paleobiology Database