[1] The holotype, NMMNH P-25052, of Menefeeceratops was discovered by Paul Sealey in 1996 and later mentioned in a paper in 1997,[2] but was not given a name until it was revisited in 2021 by Sebastian Dalman, Peter Dodson, and colleagues.

[3][4] Menefeeceratops is named from the location where the fossils were found, and in honor of Paul Sealey, the research associate at the NMMNH who originally discovered them in 1996.

[1] Based on comparisons with related animals including Styracosaurus, Vagaceratops, and Centrosaurus, Menefeeceratops is believed to have been approximately 4–4.5 metres (13–15 ft) long in life.

Sinoceratops Wendiceratops Eucentrosaura The disarticulated holotype of Menefeeceratops was collected in a greenish-gray mudstone alongside an isolated trionychid turtle costal and fragments of fossilized woods.

The sandstones that comprise the Menefee Formation that are fixed within carbonaceous shales of coastal swamp or lagoon origin and are thought to have been created by flood tidal deltas that north and east across New Mexico and towards the retreating Western Interior Seaway.