Genus: Guimarotodus MARTIN, 1999
Etymology: Guimarota Coal Pits, Guimarota, Portugal, and Greek, odon, "tooth."

Species: inflatus MARTIN, 1999
Etymology:

Holotype: Gui Mam 121/75

Locality: Guimarota lignite mine (Mina de Lignito Guimarota), 1.5 km SSE of Leiria, Leiria District, Portugal.

Horizon:

Biostratigraphy:

Age: Lustianien, Kimmeridgian Stage, Middle Malm Epoch, Late Jurassic.

Material: Upper and lower teeth.