Agassiceras is a Lower Jurassic ammonite from the Sinemurian stage in Europe. Agassiceras belongs to the psiloceratacean family, Arietitidae, and is characterized by being compressed with a sharp venter and feeble straight ribs that may bifurcate near the umbilical edge.
| Agassiceras Temporal range:
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Scientific classification 
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| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Cephalopoda |
| Subclass: | †Ammonoidea |
| Order: | †Ammonitida |
| Family: | †Arietitidae |
| Subfamily: | †Agassiceratinae |
| Genus: | †Agassiceras Hyatt, 1875 |
References
edit- Arkell et al., 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology. Part L. Ammonoidea. Geological Society of America and Univ. of Kansas press.