Genus: Rosierodon DEBUYSSCHERE, GHERRBRANT, & ALLAIN, 2014
Etymology: Rosier-' after Rosieres-aux-Saliens, Meurthe-et-Moselle Department, France, a city close to the type locality, and Greek, -odon, "tooth."

Species: anceps DEBUYSSCHERE, GHERRBRANT, & ALLAIN, 2014
Etymology: Latin, anceps, "ambiguous"; because the referred specimens show a mixture of features seen in morganucodonts and kuehneotheriids.

Holotype MNHN 62 L

Locality: Quarry of Saint-Nicolas-de-Port, situated on the commune of Rosieres-aux-Salines, Lorraine, Meurthe-et-Moselle Department, France.

Horizon: "Gres infraliasques" Formation.

Biostratigraphy:

Age: Rhaetian Stage, Late Triassic Epoch, Latest Triassic.

Material: Lower left molariform.

Referred material:

89 L: Lower right molariform.

202: Lower right molariform.

RAS 795: Lower left molariform.

SNP 11: Lower right molariform.

SNP 22: Lower right molariform.

SNP 79 l: Lower left molariform.

SNP 414 W: Lower left molariform.