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Hulsanpes

Name means: “Khulsan foot”1
Ate: MeatRaptorsLate Cretaceous

Hulsanpes was a small, speedy dinosaur that lived in what is now Mongolia. It had long legs and sharp claws, and scientists think it might have been a good runner that could also swim. This little raptor was about the size of a chicken!16

Lived
84 to 72 million years ago6
Late Cretaceous
Fossils found in
Khulsan, Barun Goyot Formation, Mongolia61
Length
0.3 to 0.4 m (1 to 1.3 ft)2
estimate based on comparison with Confuciusornis and Yandangornis; juvenile specimen
Top speed
about 43 km/h (27 mph)
Running, estimate
What did Hulsanpes eat?
Scientists think Hulsanpes was a meat-eater, like other raptors. It probably ate small animals, but we don't know exactly what.

When did it live?

Triassic
Jurassic
Cretaceous
252 million years ago20114566, the asteroid

How big was it?

How long was it?

Hulsanpes about 0.4 m long (1.3 ft)A house cat about 0.5 m (1.6 ft)A dog about 1 m (3.3 ft)A bicycle about 1.8 m (5.9 ft)
as long as 2 bananas end to endas long as 12 toy building bricks in a rowcould run 100 metres in 8.4 seconds (the fastest human needs 9.6)

How big was Hulsanpes compared to YOU?

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

How fast was it?

cool stuff

Fun facts

1

Hulsanpes is known from only a partial braincase and a few foot bones, making it one of the most mysterious raptors.1

2

The name Hulsanpes means 'Khulsan foot' because its fossils were found at a place called Khulsan in the Gobi Desert.1

3

Scientists think Hulsanpes was a young animal when it died, because its bones look rough and not fully grown.1

4

Hulsanpes belonged to a group called Halszkaraptorinae, which includes dinosaurs that may have lived partly in water.1

5

Its foot bones were slender and not fused together, which helped it run fast on the ground.1

6

Hulsanpes lived about 75 to 72 million years ago, during the Late Cretaceous period.1

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

?How big was Hulsanpes?

Hulsanpes was a very small dinosaur, about the size of a chicken. Its foot bones were only about 3.4 to 3.9 cm long.34

?What did Hulsanpes eat?

Scientists think Hulsanpes was a meat-eater, like other raptors. It probably ate small animals, but we don't know exactly what.3

?Could Hulsanpes swim?

Maybe. Hulsanpes belonged to a group called Halszkaraptorinae, and some of its relatives may have lived partly in water. But Hulsanpes itself might have been more of a runner.35

?When did Hulsanpes live?

Hulsanpes lived about 75 to 72 million years ago, during the Late Cretaceous period.34

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Myth buster

Myth: Some people think Hulsanpes was a bird because of its small size and light bones.

Truth: Hulsanpes was a non-avian dinosaur, a type of raptor called a dromaeosaurid, not a bird.1

For dino experts

Scientific name
Hulsanpes
Named by
Osmolska 19826
Group
Raptors
Family / clade
Dromaeosauridae6
Classification
Theropoda > Dromaeosauridae6
Age of the rocks
84 to 72 million years (Campanian)6
Rock formations
Baruungoyot6
Countries
Mongolia6
Fossil records
1 in the Paleobiology Database6
Discovery
Hulsanpes was discovered in 1970 during a Polish-Mongolian expedition to the Gobi Desert. It was named and described by Polish paleontologist Halszka Osmólska in 1982.1
Still debated
Scientists are still debating whether Hulsanpes was mostly a runner or spent a lot of time swimming, because its foot bones show features of both lifestyles.1

Where the facts come from

  1. Hulsanpes (en.wikipedia.org)
  2. Details on Hulsanpes (dml.reptilis.net)
  3. Hulsanpes (Wikipedia) (Wikipedia)
  4. Hulsanpes - Wikipedia (en.m.wikipedia.org)
  5. Redescription and affinities ofHulsanpes perlei(Dinosauria, Theropoda) from the Upper Cretaceous of Mongolia (exa.ai)
  6. Hulsanpes in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.

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