Genus: Nova ?
Allacodon non MARSH, 1881
Etymology: Greek, allos, “strange”, Greek, ake, “point”, Greek, odon, “tooth”: Strange point tooth.

Species: fortis MARSH, 1889
Etymology:

Holotype: USNM 2137

Locality: Lance Creek Region, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: Upper premolar.
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Species: rarus MARSH, 1889
Etymology:

Holotype: USNM 2144

Locality: Wyoming.

Horizon:

Biostratigraphy:

Age: Late Cretaceous.

Material: Upper premolar.

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Species: lentus MARSH, 1892
Etymology:

Holotype: USNM 11758

Locality: Lance Creek Region, Wyoming.

Horizon: Laramie Formation.

Biostratigraphy:

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

Material: Upper premolar and 2 molars.
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Species: pumilis MARSH, 1892
Etymology:

Holotype: YPM 10372

Locality: Lance Creek region, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material: 3 upper teeth.