Genus: Clemensodon KRAUSE, 1992
Etymology: In honor of Professor William A. Clemens of the University of California Berkeley, in recognition of his outstanding monographic treatment of the Late Cretaceous mammalian fauna from the type Lance Formation, Greek, odon, “tooth”: Clemens tooth.

Species: megaloba KRAUSE, 1992
Etymology: Greek, mega, "large" and Greek, lobous, "lobe"; in reference to the large exodaenodont lobe present on the p4 of this species.
= ?Mesodma sp. CLEMENS, 1964
= Kimbetohia campi CLEMENS, 1973 (partim)

Holotype: AMNH 57623

Locality: UCMP V-5620, Lull Quarry, near the head of a tributary of Buck Creek, Powder River Basin, Niobrara County (Formerly Converse County), Wyoming.

Horizon: Lance Formation.


Age: Lancian age, upper Maastrichtian Stage, uppermost Senonian subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Isolated right p4.


UCMP 47149: Left p4.

UCMP 45693: Anterior fragment of a right p4.