Genus: Eotomistoma YOUNG, 1964
Etymology: Greek, eos, "dawn, primorial," combined with Tomistoma.

Species: multidentata YOUNG, 1964
Etymology: Latin, multi, "many" and Latin, dentatus, "toothed."

Holotype:

Locality: Otok district, Ikechaomeng, Inner Mongolia, China.

Horizon:

Biostratigraphy:

Age: Senonian Subepoch, Gulf Epoch, Inferior Late Cretaceous.

Material: Anterior portion of skull.