Dino card No. 1305 of 2,027

Ojoceratops

Say it: OH-ho-SER-ah-tops

Name means: “Ojo Alamo horned face”1

Ate: PlantsHorned dinosLate Cretaceous

Ojoceratops was a horned dinosaur that looked a lot like Triceratops but lived a little earlier. It had a big frill on its head and three horns on its face. Some scientists think it might actually be the same as Triceratops!1

Lived

84 to 66 million years ago4

Late Cretaceous

Fossils found in

New Mexico, USA1 4

Food

Plants4

Length

6 to 9 m1 2

estimate; largest known specimen 6 m

Weight

3 tonnes2

estimate; largest known specimen

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

How big was it?

How long was it?

How heavy was it?

as heavy as 2 cars

as long as 2 cars parked in a rowas long as 50 bananas end to endas heavy as 100 big dogsas heavy as 600 watermelons

How big was Ojoceratops compared to YOU?

Just maths in your browser. Nothing is saved or sent anywhere.

cool stuff

Fun facts

Ojoceratops lived about 66 million years ago, near the very end of the age of dinosaurs.1

Its name means 'Ojo Alamo horned face' because its fossils were found in the Ojo Alamo Formation in New Mexico.1

Ojoceratops had a more squared-off frill than Triceratops, but some scientists say that shape also appears in some Triceratops specimens.1

Some experts think Ojoceratops might be the same dinosaur as Triceratops or Eotriceratops, but others say it is a valid genus with unique features.1

The only known fossil of Ojoceratops is a partial skull, including a left squamosal bone.4

Ojoceratops belongs to the same group as Triceratops, called Triceratopsini.1

AI-made picture of Ojoceratops — An AI-made picture of how Ojoceratops 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 Ojoceratops

?How big was Ojoceratops?

About 9 metres (30 feet) long.1

?What did Ojoceratops eat?

It was a herbivore, meaning it ate plants.4

?When did Ojoceratops live?

It lived about 66 million years ago, near the end of the Cretaceous period.1

?Is Ojoceratops the same as Triceratops?

Scientists disagree. Some think it is the same as Triceratops, while others say it is a valid genus with unique features.1 3

Ask Rex about Ojoceratops

Rex only answers questions about this page. 3 questions a day.

Rex is an AI and can make mistakes. He runs on servers in the EU and questions are never saved. Never type your name or other personal things.

Myth buster

Myth: Ojoceratops is definitely a separate dinosaur from Triceratops.

Truth: Scientists disagree. Some think Ojoceratops is just a younger version of Triceratops, while others say it has enough unique features to be its own genus.1

For dino experts

Scientific name: Ojoceratops
Named by: Sullivan and Lucas 20104
Group: Horned dinos
Family / clade: Ceratopsidae4
Classification: Ornithischia > Ceratopsia > Ceratopsidae4
Age of the rocks: 84 to 66 million years (Campanian / Maastrichtian)4
Rock formations: Ojo Alamo4
Countries: USA4
Fossil records: 166 in the Paleobiology Database4
Discovery: Ojoceratops was named by Robert Sullivan and Spencer Lucas in 2010 based on a partial skull found in New Mexico.1 4
Still debated: Scientists are still debating whether Ojoceratops is a separate dinosaur or just another name for Triceratops.1

Where the facts come from

Ojoceratops (en.wikipedia.org)
Ojoceratops fowleri | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
O is for Ojoceratops | National Geographic (nationalgeographic.com)
Ojoceratops in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

Every fact on this page has a number that points to its source. If we got something wrong, sorry, we are dino fans, not a science journal. Tell us at [email protected] and we will fix it.

Rex is hungry! Dino Wiki is a dad's project for his dino-loving son, free with no ads. Grown-ups can feed Rex a snack to help keep it online.Feed Rex