Guhsania
Guhsania is an extinct ammonoid cephalopod genus that lived during the early Middle Jurassic, from about 171.5 to 173.5 Ma.
Guhsania belongs to the Sonniniidae, a member of the Hildoceratoidea superfamily. The shell : essentially involute and ribbed throughout, umbilical edge sharp, outer whorl oxyconic.