see text Oxycerites is an extinct ammonoid cephalopod belonging to the haploceratoid family, Oppeliidae, that lived during the Middle Jurassic.

[1] Shells of Oxycerites are involute, compressed and generally smooth with a sharply rounded venter on the outer rim, deeply impressed dorsum on the inner rim, and a small umbilicus.

The living chamber takes up slightly more than half a whorl.

Oppelia and Oecotraustes are similar and closely related forms.

Oppelia is smoother, Oecotraustes more strongly ribbed Jurassic of Argentina, France, Germany, Iran, Madagascar, Russia, Saudi Arabia and the United Kingdom[2]