Bayannurosaurus

Say it: bay-AN-uh-roh-SORE-us

Name means: “Bayannur lizard”1

Ate: PlantsBeaked plant-eatersEarly Cretaceous

Bayannurosaurus was a big, plant-eating dinosaur that lived in what is now China. It had a long tail and walked on four legs most of the time. Its skeleton was found almost completely preserved, which is very rare!1

Lived

121 to 120 million years ago3

Early Cretaceous

Fossils found in

Inner Mongolia, China1

Food

Plants2

Length

9 m1

When did it live?

Triassic

Jurassic

Cretaceous

252 million years ago20114566, the asteroid

How big was it?

as long as 2 cars parked in a rowas long as 50 bananas end to end

How big was Bayannurosaurus compared to YOU?

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cool stuff

Fun facts

Bayannurosaurus was named in 2018, making it a recently discovered dinosaur.1

Its species name 'perfectus' means 'perfect' because the fossil was so well preserved.1

This dinosaur lived about 124 million years ago during the Early Cretaceous period.1

Bayannurosaurus was an iguanodontian, a group of plant-eating dinosaurs that often walked on two or four legs.1

The nearly complete skeleton included the entire tail, which helps scientists understand how it moved.1

Scientists think Bayannurosaurus was more advanced than Hypselospinus but less advanced than Ouranosaurus.1

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

?How big was Bayannurosaurus?

Bayannurosaurus was a large iguanodontian, measuring up to 9 metres (29.5 feet) in total body length.1

?What did Bayannurosaurus eat?

Bayannurosaurus was a plant-eating dinosaur. It ate plants, like other iguanodontians.1

?When did Bayannurosaurus live?

Bayannurosaurus lived about 124 million years ago during the Early Cretaceous period, specifically the early Aptian age.1

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For dino experts

Scientific name: Bayannurosaurus
Named by: Xu et al. 20183
Group: Beaked plant-eaters
Family / clade: Ankylopollexia3
Classification: Ornithischia > Ornithopoda > Iguanodontia3
Age of the rocks: 121 to 120 million years (Aptian)3
Rock formations: Bayingebi3
Countries: China3
Fossil records: 1 in the Paleobiology Database3
Discovery: Bayannurosaurus was discovered in 2013 by a joint expedition in Bayannur, China, and named by paleontologist Xu Xing and colleagues in 2018.1
Still debated: Scientists are still debating exactly where Bayannurosaurus fits in the family tree of iguanodontian dinosaurs.1

Where the facts come from

Bayannurosaurus (en.wikipedia.org)
PBDB Taxon (paleobiodb.org)
Bayannurosaurus 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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