Dino card No. 0929 of 2,027

Judiceratops

Say it: JOO-dee-SERR-ah-tops

Name means: “Judith River horned face”1

Ate: PlantsHorned dinosLate Cretaceous

Judiceratops was a horned dinosaur that lived about 78 million years ago in what is now Montana, USA. It was a plant-eater that walked on all four legs and had a big frill on its head. It is the oldest known member of the chasmosaurine group of horned dinosaurs.1

Lived

84 to 72 million years ago4

Late Cretaceous

Fossils found in

Judith River Formation, Hill County, Montana, USA1 4

Food

Plants4 1

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

cool stuff

Fun facts

Judiceratops had unusual teardrop-shaped horns above its eyes, a shape not seen in other horned dinosaurs.1

Its frill had large wing-like hornlets on the sides and small bumps on the back edge.1

Judiceratops lived alongside many other dinosaurs, including the horned dinosaurs Albertaceratops and Medusaceratops, and the predator Gorgosaurus.1

The first fossils of Judiceratops were found in a place called Skull Crest in Montana.4

Scientists think Judiceratops evolved quickly, because it appears in the fossil record soon after the earliest horned dinosaurs in North America.1

Judiceratops is known from only a few skull fragments, so its full size is still unknown.2

AI-made picture of Judiceratops — An AI-made picture of how Judiceratops might have looked, made by a computer from what scientists know. It is a guess: the real animal may have looked different, and nobody knows its true colours.

you asked

Most asked questions about Judiceratops

?How big was Judiceratops?

Nobody knows for sure. Judiceratops is known from only a few skull fragments, so its full size is still unknown.1

?What did Judiceratops eat?

Judiceratops was a plant-eater. It likely fed on low-growing vegetation, such as ferns, like other horned dinosaurs.3

?When did Judiceratops live?

Judiceratops lived about 78 million years ago, during the Late Cretaceous Period.1

?Where was Judiceratops found?

Its fossils were found in the Judith River Formation in Hill County, Montana, USA.1

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For dino experts

Scientific name: Judiceratops
Named by: Longrich 20134
Group: Horned dinos
Family / clade: Ceratopsidae4
Classification: Ornithischia > Ceratopsia > Ceratopsidae4
Age of the rocks: 84 to 72 million years (Campanian)4
Rock formations: Judith River4
Countries: USA4
Fossil records: 1 in the Paleobiology Database4
Discovery: Judiceratops was named by paleontologist Nicholas Longrich in 2013. The first fossils, a partial skull, were found in the Judith River Formation of Montana.1 4
Still debated: Scientists are not sure exactly how Judiceratops is related to other chasmosaurine horned dinosaurs, because the fossils are so fragmentary.2

Where the facts come from

Judiceratops (en.wikipedia.org)
A reassessment of the horned dinosaur Judiceratops tigris (Ornithischia: Ceratopsidae) from the Upper Cretaceous (Campanian) of Montana, USA (cdnsciencepub.com)
Ancient cousin of Triceratops highlights turnover among horned dinosaurs | Yale News (news.yale.edu)
Judiceratops in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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