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Burianosaurus

Say it: bur-ee-AN-oh-SORE-us
Name means: “Burian's lizard”1
Ate: PlantsBeaked plant-eatersLate Cretaceous

Burianosaurus was a small, plant-eating dinosaur that lived in what is now the Czech Republic during the Late Cretaceous. It is the first dinosaur ever named from that country, and scientists know it from a single thigh bone.14

Lived
100 to 94 million years ago4
Late Cretaceous
Fossils found in
Mezholezy quarry, Nová Lhota, Czech Republic4
Food
Plants4
Length
3 to 4 m3
Top speed
about 43 km/h (27 mph)
Running, estimate

When did it live?

Triassic
Jurassic
Cretaceous
252 million years ago20114566, the asteroid

How big was it?

How long was it?

Burianosaurus about 4 m longA bicycle about 1.8 mA car about 4.5 mAn elephant, the biggest land animal today about 6.5 mA house about 10 m
as long as 4 dogs nose to tailas long as 22 bananas end to end

How big was Burianosaurus compared to YOU?

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How fast was it?

cool stuff

Fun facts

1

Burianosaurus is the first validly named dinosaur from the Czech Republic.1

2

Its name honors the famous Czech paleoartist Zdeněk Burian, who painted many prehistoric animals.1

3

The only known fossil is a well-preserved left thigh bone (femur) found in 2003.14

4

Scientists studied the bone's internal structure and found it came from a young adult.2

5

Burianosaurus lived about 100 to 94 million years ago during the Cenomanian stage of the Late Cretaceous.4

6

It was a basal ornithopod, meaning it was an early relative of bigger plant-eaters like Iguanodon.2

AI-madeAI-made picture of Burianosaurus
An AI-made picture of how Burianosaurus 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 Burianosaurus

?What did Burianosaurus eat?

It was a plant-eating dinosaur, a ground-dwelling herbivore. It likely ate plants like ferns and leaves.41

?How big was Burianosaurus?

Scientists don't know its exact size because only a thigh bone has been found. It was a small dinosaur, but no exact measurements are given in the sources.1

?When did Burianosaurus live?

It lived during the Cenomanian stage of the Late Cretaceous, about 100 to 94 million years ago.1

?Why is Burianosaurus important?

It is the first validly named dinosaur from the Czech Republic, and it is the only known non-avian dinosaur from Central Europe during that time.12

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For dino experts

Scientific name
Burianosaurus
Named by
Madzia et al. 20184
Group
Beaked plant-eaters
Family / clade
Ornithopoda4
Classification
Ornithischia > Ornithopoda4
Age of the rocks
100 to 94 million years (Cenomanian)4
Rock formations
Peruc-Korycany4
Countries
Czechia4
Fossil records
1 in the Paleobiology Database4
Discovery
The fossil was discovered in 2003 in the Peruc-Korycany Formation of the Czech Republic. It was first described in 2005 as possibly an iguanodont, and then named Burianosaurus augustai by Daniel Madzia and colleagues in 2017.14
Still debated
Scientists are not sure exactly how Burianosaurus is related to other ornithopods, because its skeleton is incomplete.2

Where the facts come from

  1. Burianosaurus (en.wikipedia.org)
  2. A basal ornithopod dinosaur from the Cenomanian of the Czech Republic: Journal of Systematic Palaeontology: Vol 16 , No 11 - Get Access (tandfonline.com)
  3. Burianosaurus augustai (cs.wikipedia.org)
  4. Burianosaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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More from the same group: Beaked plant-eaters

Also from the same time: Late Cretaceous

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