[1] The Bisticeratops holotype specimen, NMMNH P-50000, was discovered in 1975 in layers of the Kirtland Formation (Farmington Member) in the Bisti/De-Na-Zin Wilderness area of San Juan Basin, northwestern New Mexico, United States, which dates to the late Campanian age of the late Cretaceous period.

[1] Using the same phylogenetic analyses used to find the position of Sierraceratops, Dalman et al. (2022) recovered Bisticeratops as a sister taxon to an unnamed ceratopsian from the Almond Formation.

mavericus Pentaceratops aquilonius Williams Fork chasmosaurine Pentaceratops sternbergii Utahceratops Navajoceratops Terminocavus Spiclypeus Kosmoceratops Bisticeratops Almond Formation chasmosaurine Anchiceratops Arrhinoceratops Triceratopsini Sierraceratops Bravoceratops Coahuilaceratops The holotype preserves bite marks from tyrannosaurids, some of which show signs of healing.

This area represents the product of alluvial muds and overbank sand deposits from the many channels draining the coastal plain that existed on the inland seashore of North America during the late Cretaceous period.

No other dinosaurs have been described from the Farmington Member, but taxa from other sub-units include kritosaurin and lambeosaurine hadrosaurs, ankylosaurids, chasmosaurine ceratopsids, pachycephalosaurids, dromaeosaurids, an indeterminate ornithomimid, tyrannosauroids, azhdarchids, crurotarsans, turtles, and cartilaginous and bony fish from the De-Na-Zin and Hunter Wash members.