Mammitinae

Mammitinae
Temporal range: early Turonian
Mammites nodosoides fossil
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Cephalopoda
Subclass: Ammonoidea
Order: Ammonitida
Superfamily: Acanthoceratoidea
Family: Acanthoceratidae
Subfamily: Mammitinae
Alpheus Hyatt

Mammitinae comprises a subfamily within the Acanthoceratidae (Ammonoidea) characterized by moderately to very evolute shells with rectangular to squarish whorl sections along with blunt umbilical and prominent inner and outer ventrolateral tubercles on sparse ribs that may be round and strong, sharp and narrow, or absent. The suture is somewhat simpler that that of the Acanthoceratinae. Range is restricted to the lower Turonian stage of the Upper Cretaceous.

Genera include:

Mammites Laube & Bruden, 1886
Benueites Reyment 1954
Metasigaloceras Hyatt, 1903
Pseudoaspidoceras Hyatt, 1903
Watinoceras Warren,1930

The inclusion of Kamerunoceras Reyment, 1940, is doubtful.

References

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