Graphoceras
| Graphoceras Temporal range: Middle Jurassic | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Order: | Ammonitida |
| Family: | Graphoceratidae |
| Genus: | Graphoceras Buckman, 1898 |
Graphoceras is an extinct ammonite genus included in the hildoceratacean family Graphoceratidae that lived during the Bajocian stage, Middle Jurassic in what is now Europe, north Africa, and Iran.
Graphoceras produced a compressed, involute shell with a raised umbilical edge and sinuous ribbing.
References
- Arkell, et al., 1957. Mesozoic Ammonoidea (L264), Treatise on Invertebrate Paleontology Part L. Geological Society of America and University of Kansas Press.
- Sepkoski list of Cephalopod genera.
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