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Laiyangosaurus

Say it: lie-YANG-oh-SORE-us

Name means: “Laiyang lizard”1

Ate: PlantsDuck-billsLate Cretaceous

Laiyangosaurus was a duck-billed dinosaur that munched on tough plants in what is now China. It had a flat nose and no fancy crest on its head, unlike some of its relatives. This dinosaur lived about 72 million years ago during the Late Cretaceous.1 4

Lived

84 to 72 million years ago4

Late Cretaceous

Fossils found in

Laiyang Basin, Shandong Province, China1 4

Food

Plants4

Length

3.9 to 8 m2 3

composite skeletons; large adult 8 m, small adult 3.9 m

Weight

up to 2.2 tonnes3

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 1.5 cars

as long as 8 dogs nose to tailas long as 44 bananas end to endas heavy as 73 big dogsas heavy as 440 watermelons

How big was Laiyangosaurus compared to YOU?

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cool stuff

Fun facts

It belonged to a group called Edmontosaurini, which includes other duck-billed dinosaurs like Edmontosaurus.1

Some fossils thought to be from Laiyangosaurus actually belong to other kinds of hadrosaurs, like kritosaurins and lambeosaurines.1

The name Laiyangosaurus means 'Laiyang lizard', after the Laiyang area in China where its fossils were dug up.1

Laiyangosaurus lived alongside insects, plants, and other dinosaurs, and its fossils were found in the same rocks as dinosaur eggs.1

This dinosaur was a saurolophine hadrosaurid, meaning it belonged to the group of duck-billed dinosaurs without hollow crests.1

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

?How big was Laiyangosaurus?

Scientists have not yet estimated its full size, but it was a large duck-billed dinosaur, similar in build to other hadrosaurs.1

?What did Laiyangosaurus eat?

It ate tough plants, using its flat beak and many cheek teeth to grind them up.1

?Did Laiyangosaurus have a crest?

No, it had a flat head with no fancy crest, unlike some other duck-billed dinosaurs.1

?Where was Laiyangosaurus found?

Its fossils were dug up in the Laiyang Basin in Shandong Province, China.1

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For dino experts

Scientific name: Laiyangosaurus
Named by: Zhang et al. 20194
Group: Duck-bills
Family / clade: Hadrosauridae4
Classification: Ornithischia > Ornithopoda > Iguanodontia > Hadrosauridae4
Age of the rocks: 84 to 72 million years (Campanian)4
Rock formations: Jingangkou4
Countries: China4
Fossil records: 1 in the Paleobiology Database4
Discovery: Laiyangosaurus was named in 2019 by Zhang Jialiang and other scientists based on skull bones found in the Jingangkou Formation in Shandong, China. The type species is Laiyangosaurus youngi.4 1
Still debated: Scientists still debate which specimens truly belong to Laiyangosaurus, because some fossils thought to be from this dinosaur may actually be from other hadrosaur groups.1

Where the facts come from

Laiyangosaurus (en.wikipedia.org)
The postcranial anatomy of the saurolophine hadrosaurid (ivpp.cas.cn)
Laiyangosaurus youngi | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
Laiyangosaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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