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Jeyawati

Say it: JAY-ah-WAH-tee

Name means: “grinding mouth in the Zuni language”1

Ate: PlantsBeaked plant-eatersLate Cretaceous

Jeyawati was a plant-eating dinosaur that lived about 90 million years ago. It had a beak and a rough bump on its skull near its eye.1 2

Lived

94 to 90 million years ago5

Late Cretaceous

Fossils found in

New Mexico, USA, in the Moreno Hill Formation1 5

Food

Plants5

Length

4 to 6 m5

estimate based on related hadrosauroids

Weight

370 kg3

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 12 big dogs

as long as 6 dogs nose to tailas long as 33 bananas end to endas heavy as 74 watermelons

How big was Jeyawati compared to YOU?

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cool stuff

Fun facts

Jeyawati's full scientific name is Jeyawati rugoculus, which means 'wrinkle eye' because of the rough texture on its skull bone near the eye.1 2

It was a hadrosauroid, a cousin of the duck-billed dinosaurs, but it lived earlier than most of them.1

The only known fossil of Jeyawati was found in rocks that are about 90 million years old, from the Turonian stage of the Late Cretaceous.5 1

Jeyawati was more advanced than some early hadrosauroids like Eolambia, but not as advanced as later ones like Bactrosaurus.1

The name Jeyawati comes from the Zuni language, spoken by Native American people in New Mexico.1

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

?How big was Jeyawati?

Nobody knows for sure because only a partial skeleton has been found. Based on its relatives, it was probably a medium-sized dinosaur, but no exact length or weight is given in the sources.1 4

?What did Jeyawati eat?

Jeyawati was a plant-eater. It likely ate ferns and conifer trees that grew in its swampy forest home 91 million years ago.4

?Could Jeyawati walk on two legs?

Yes, scientists think it could. It probably walked on all fours but was also able to rear up on its hind legs.4

?Where was Jeyawati found?

Its fossils were found in western New Mexico, USA, in rocks of the Moreno Hill Formation.1 5

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For dino experts

Scientific name: Jeyawati
Named by: McDonald et al. 20105
Group: Beaked plant-eaters
Family / clade: Hadrosauroidea5
Classification: Ornithischia > Ornithopoda > Iguanodontia5
Age of the rocks: 94 to 90 million years (Turonian)5
Rock formations: Moreno Hill5
Countries: USA5
Fossil records: 1 in the Paleobiology Database5
Discovery: Jeyawati was named in 2010 by Andrew T. McDonald, Douglas G. Wolfe, and James I. Kirkland. The fossil was found in the Moreno Hill Formation in New Mexico.1 5
Still debated: Scientists are still debating exactly where Jeyawati fits on the family tree of hadrosauroids, with some studies placing it close to Eolambia and others near Eotrachodon.1

Where the facts come from

Jeyawati (en.wikipedia.org)
Holdings: A New Basal Hadrosauroid (Dinosauria: Ornithopoda) from the Turonian of New Mexico :: Descubridor de recursos de la Universidad Veracruzana (ebusca.uv.mx)
Jeyawati rugoculus | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
“Grinding Mouth, Wrinkle Eye”: Penn Graduate Student Describes New Species of Plant-Eating Dinosaur (penntoday.upenn.edu)
Jeyawati 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.

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