Genus: Paressodon WILSON, DECHENSE & ANDERSON, 2010
Etymology: Greek, para, "near," + Essonodon; referring to morphological similarity and close phylogenetic relationship to Essonodon.

Species: nelsoni WILSON, DECHENSE & ANDERSON, 2010
Etymology: In honor of DMNS volunteer, Charles Nelson, who found the holotype and has contributed substantial energy to the project.

Holotype: UWBM 89450

Locality: Ingrid’s Jaw, DMNH loc. 3322 (=UWBM loc. C1098) is an irregular, weathered isolated outcrop of ~30 m2 immediately south of Weld County Road 122, Pawnee National Grasslands, Cheyenne basin, Weld County, Colorado.

Horizon: Upper Laramie Formation.

Biostratigraphy:

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

Material: Right maxillary fragment with M1-M2.

Referred material:

= Paressonodon cf. P. nelsoni

DMNH 54571: Right M1.

 

DONOHUE, WILSON, & BREITHAUPT, 2013

Locality: UCMP V-84215 (= UW V-79032), Black Butte Station fossil localitys, eastern flank of the Rock Springs uplift, Sweetwater County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

UCMP 197660: Ioslated right M2.

UW 15167: Isolated right m2.

UW 20134: Isolated left m2.

UW 20041: Isoalted left M2.

 

Locality: Dino Ray (UW loc. V-79033), Black Butte Station fossil localitys, eastern flank of the Rock Springs uplift, Sweetwater County, Wyoming.

Horizon: Lance Formation.

Biostratigraphy:

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

Material:

UW 17377: Isoalted right M1.