Reynesoceras is genus of ammonites that lived during the upper Pliensbachian stage of early Jurassic.

Their fossils were found in Europe, northern Africa, Asia, North America and South America.

[1][3] Ammonites of this genus had shells with depressed whorl section and single, coarse ribs.

Ribs are crossing venter, but there is no bifurcation, which is often present on other genera belonging to Dactylioceratidae.

[1][4] British Columbia, Chile, Hungary, Italy and Morocco [5]