Mammitinae
| Mammitinae Temporal range: Late Cretaceous (early turonian | |
|---|---|
| Scientific classification | |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | Ammonoidea |
| Order: | Ammonitida |
| Superfamily: | Acanthoceratoidea |
| Family: | Acanthoceratidae |
| Subfamily: | Mammitinae Alpheus Hyatt |
The Mammitinae comprises a subfamily within the Acanthoceratidae (Ammonoidea) characterized by moderately to very evolute shelss 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
- W.J. Arkell, et al., Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Geological Society of America and University of Kansas Press.