Critically, it shares the same unusual horn shape seen in the holotype, supporting referral of the two fossils to the same species, and it helps to provide additional information on the anatomy of Judiceratops.

CMN 8301 Anchiceratops Almond Formation chasmosaur Bravoceratops Coahuilaceratops Arrhinoceratops Titanoceratops Torosaurus T. utahensis T. horridus T. prorsus Despite the fragmentary nature of the fossils, they can be identified as a distinct species.

Judiceratops is the oldest known member of the Chasmosaurinae, but already shows many of the distinctive features of the group including the long, concave squamosals and pointed epioccipitals.

Instead the specialized features of the frill- the large winglike hornlets on the margins of the frill, and the reduced ones on the back- show that it represents a side branch in chasmosaurine evolution.

No fossils from this lineage are known from later rocks, consistent with a pattern of high turnover- species rapidly evolved, and became extinct- as seen in other horned dinosaurs in the latest Cretaceous.

Judiceratops shared its paleoenvironment with bony fishes, amphibians, the Choristoderan Champsosaurus, the hadrosaur Brachylophosaurus canadensis, the pachycephalosaur Colepiocephale lambei, the theropods Dromaeosaurus, Gorgosaurus and Troodon, and with fellow ceratopsians Albertaceratops, Medusaceratops and Avaceratops.