Agassiceras

{{Short description|Lower Jurassic ammonite}}

{{Automatic Taxobox

| fossil_range = {{fossilrange|Sinemurian}}

| taxon = Agassiceras

| authority = Hyatt, 1875

}}

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.