Genus: Telacodon MARSH, 1889
Etymology: Greek, teleos, “complete, full”, Greek, ake, “pont” and Greek, odon, “tooth”: Complete point tooth.

Species: laevis MARSH, 1889
Etymology:

Holotype: YPM 11780

Locality: Quarry 5 of LULL 1915, Lance Creek area, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Fragment of right mandible containing LP2-4 and alveoli of more mesial teeth.
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Species: praestans MARSH, 1892
Etymology:

Holotype: USNM 2133

Locality: Converse County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Portion of right lower jaw containing 2 molars.

Paratype: USNM 2886: Lower molar.