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Gryposaurus

Say it: GRY-po-SORE-us

Name means: “hooked-nosed lizard”1

Ate: PlantsDuck-billsLate Cretaceous

Gryposaurus was a duck-billed dinosaur with a funny hooked nose like a Roman nose. It lived in North America about 80 to 75 million years ago and could walk on two legs or all fours.1

Lived

84 to 66 million years ago2

Late Cretaceous

Fossils found in

Alberta in Canada, and Montana, Utah and Texas in the USA1 2

Food

Plants1

Length

8 m1

Weight

2.5 tonnes to 3 tonnes1

estimate for different species

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 8 dogs nose to tailas long as 44 bananas end to endas heavy as 100 big dogsas heavy as 600 watermelons

How big was Gryposaurus compared to YOU?

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

cool stuff

Fun facts

Gryposaurus had a narrow, arching hump on its nose that looked like a Roman nose, which might have been used to tell species apart or to fight others of the same kind.1

Some Gryposaurus fossils even include skin impressions that show it had pyramid-shaped scales running along the middle of its back.1

Its teeth were packed into batteries of hundreds, and only a few were in use at a time, constantly being replaced like a conveyor belt.1

Gryposaurus probably lived near rivers, and it disappeared from the Dinosaur Park Formation before another duckbill called Prosaurolophus showed up.1

The species G. monumentensis was named one of the top 10 new species of 2008 by the International Institute for Species Exploration.1

Gryposaurus could reach food from the ground up to about 4 metres (13 feet) high, using its beak and cheek-like organs to hold plants.1

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

?How big was Gryposaurus?

Gryposaurus was about 8 meters (26 feet) long. One nearly complete skeleton measured about 8.2 meters (27 feet) long.1

?What did Gryposaurus eat?

Gryposaurus was a herbivore that ate plants. It had hundreds of teeth in dental batteries and could feed from the ground up to about 4 meters (13 feet) high.1

?Did Gryposaurus have a crest?

Gryposaurus had a narrow, arching hump on its nose, often described as a 'Roman nose.' It might have been used for species recognition or combat.1

?Could Gryposaurus swim?

Gryposaurus probably lived near rivers and may have preferred river settings. It could walk on two legs or all fours, but there is no direct evidence it swam.1

?When did Gryposaurus live?

Gryposaurus lived about 80 to 75 million years ago, during the Late Cretaceous. A possible species from Texas may have lived until 66 million years ago.1

?Was Gryposaurus a dinosaur?

Yes, Gryposaurus was a duck-billed dinosaur, a type of hadrosaurid. It was a plant-eating dinosaur that lived in North America.1

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For dino experts

Scientific name: Gryposaurus
Named by: Lambe 19142
Group: Duck-bills
Family / clade: Hadrosauridae2
Classification: Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae2
Age of the rocks: 84 to 66 million years (Campanian / Maastrichtian)2
Rock formations: Dinosaur Park, Kaiparowits, Two Medicine2
Countries: Canada, USA2
Fossil records: 22 in the Paleobiology Database2
Discovery: Gryposaurus was named by Lawrence Lambe in 1914, based on a skull and partial skeleton collected by George F. Sternberg in 1913 from the Dinosaur Park Formation in Alberta, Canada.1 2
Still debated: Scientists still debate whether Gryposaurus and Kritosaurus are the same dinosaur, because their skulls are very similar.1

Where the facts come from

Gryposaurus (en.wikipedia.org)
Gryposaurus 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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