Euaptetoceras
| Euaptetoceras Temporal range: Bajocian[1] | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Family: | †Hammatoceratidae |
| Subfamily: | †Hammatoceratinae |
| Genus: | †Euaptetoceras Buckman, 1922 |
| Species | |
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See text | |
Euaptetoceras is an evolute hammatoceratid ammonite from the lower Middle Jurassic, included in the family Hammatoceratidae and the subfamility Hammatoceratinae. The genus may be a junior synonym for Eudmetoceras of Buckman, 1920.
The shell of Euaptetoceras has an evolute, compressed, discoidal shape with a whorl section higher than wide. The inner whorls have long primary ribs while the outer whorls become smooth. The venter, which is the outer rim, is narrowly to sharply rounded and its suture is rather complex. Eudmetoceras is found in strata of Europe, Iran, and Argentina.
References
- Arkell, et al., 1957. Mesozoic Ammonoidea; Treatise on Invertebrate Paleontology, Part L (Mollusca 4, Ammonoidea). Geological Soc. of America and Univ. Kansas Press.
- Paleobiology Database - Euaptetoceras entry
- ↑ Sepkoski, Jack (2002). "Sepkoski's Online Genus Database". Retrieved 2014-05-28.
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