A new Late Neogenepaleo-fauna from the Kiowa/Rita Blanca National Grassland, northeastern New Mexico
— Bruce A. Schumacher

The Perico Creek local paleo-fauna was informally documented by USDA Forest Service archaeologists in 1990 when nearly 350 partial bones and bone fragments of large mammals were recovered from the surface of an actively eroding cut-bank along Perico Creek, Union County, New Mexico. The bony elements are dominated by Camelops sp., with paired elements of similar size perhaps belonging to a single individual. Also present are a partial skeleton of Platygonus, remains of Equus, a large bone fragment referable to Proboscides, and a possible cervid antler base. The bones are eroding from thin beds of unconsolidated sand and clay and are associated with (minimally) two species of freshwater gastropods (Lymnaea cf. L caperata, Physa sp.), two species of terrestrial gastropods (unidentified taxon, Succinea cf. S. grosvenori), and two species of freshwater bivalves (Urnomerus tetralasmus, Sphaerium cf. S. striatinum). Future work will likely increase the known diversity of the assemblage and produce age-diagnostic taxa to further constrain the relative age of the deposit. The first excavation and detailed analysis of the stratigraphic interval will be undertaken this year.