Genus: Tiuclaenus MUIZON & MARSHALL, 1987
Etymology: In reference to Tuipamapa, Bolivia and -claenus.

Species: minutus MUIZON & MARSHALL, 1987
Etymology:

Holotype: YPFB PAL 6115

Locality: Vilia Vilia, Department of Cochabamba, Tiupampa, Bolivia.

Horizon: Mammal-bearing level of the El Molino Formation.

Biostratigraphy:

Age: Maastrichtian Stage, Upper Senonian Subepoch, Upper Gulf Epoch, Late Cretaceous.

Material: Dentary with i2, c, p2-m3

Referred material:

YPFB PAL 6119: M2.