Agassiceras

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.

References

• Arkell et al., 1957. Mesozoic Ammonoidea. Treatise on Invertebrate Paleontology. Part L. Ammonoidea. Geological Society of America and Univ. of Kansas press.