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 than that of the Acanthoceratinae. Range is restricted to the lower Turonian stage of the Upper Cretaceous.
| Mammitinae Temporal range: early Turonian
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| Mammites nodosoides fossil | |
Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Family: | †Acanthoceratidae |
| Subfamily: | †Mammitinae Hyatt, 1900 |
| Genera | |
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Genera include:
- Buccinammonites
- Buchiceras
- Cryptometoicoceras
- Dunverganoceras Warren & Stelck, 1940
- Mammites Laube & Bruden, 1886
- Metasigaloceras Hyatt, 1903
- Metoicoceras Hyatt, 1903
- Mitonia
- Nannometoicoceras
- Parabuchiceras
- Paracompsoceras
- Plesiacanthoceras
- Praemetoicoceras
- Pseudoaspidoceras Hyatt, 1903
- Rhamphidoceras
- Spathites
- Texacanthoceras
References
editThis article includes a list of references, related reading, or external links, but its sources remain unclear because it lacks inline citations. (June 2015) |
- W.J. Arkell, et al., Mesozoic Ammonoidea, Treatise on Invertebrate Paleontology, Part L, Mollusca 4. Geological Society of America and University of Kansas Press.
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