Huadanosaurus
Huadanosaurus was a small, meat-eating dinosaur that lived in what is now China about 125 million years ago. It had a strong bite and probably hunted small mammals at night. Its body was covered with feather-like structures to keep it warm.12
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Fun facts
Huadanosaurus had a very strong bite for its size, similar to some tyrannosaurs, but its front teeth were slender and weak.1
Fossilized mammal bones were found inside its stomach, showing it ate small mammals whole.1
The stomach contents included two different kinds of mammals: a ground-dwelling gobiconodontid and a tree-climbing eutherian.1
Because Mesozoic mammals were probably nocturnal, scientists think Huadanosaurus may have hunted at night too.1
Huadanosaurus had feather-like filaments on its tail, which may have helped keep it warm during cold nights.2
Its hands were weak and could not grip well, so it caught prey with its mouth instead of its claws.1
The only known specimen might be a juvenile, because its skull bones were not fully fused.1
Most asked questions about Huadanosaurus
?How big was Huadanosaurus?
About 1 metre (3.3 feet) long, which is roughly the size of a large turkey.2
?What did Huadanosaurus eat?
It ate small mammals, swallowing them whole. Fossilized bones of a ground-dwelling gobiconodontid and a tree-climbing eutherian were found in its stomach.21
?Did Huadanosaurus have feathers?
Yes, it had feather-like filaments on its tail and body, which were probably reddish-brown in color and helped keep it warm.2
?Was Huadanosaurus a dinosaur?
Yes, it was a small meat-eating theropod dinosaur that lived about 125 million years ago.2
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For dino experts
- Scientific name
- Huadanosaurus
- Named by
- Qiu et al. 20254
- Group
- Meat-eating dinos
- Family / clade
- Sinosauropterygidae4
- Classification
- Theropoda4
- Age of the rocks
- 126 to 121 million years (Barremian)4
- Rock formations
- Yixian4
- Countries
- China4
- Fossil records
- 1 in the Paleobiology Database4
- Discovery
- Huadanosaurus was named in 2025 by Qiu and colleagues based on a nearly complete skeleton found 20 years earlier in Liaoning, China. The name celebrates the 75th anniversary of the People's Republic of China and the Chinese Academy of Sciences.13
- Still debated
- Scientists are not sure whether Huadanosaurus was a juvenile or a small adult, because the only known skeleton has unfused bones.1
Where the facts come from
- Two new compsognathid-like theropods show diversified predation strategies in theropod dinosaurs - PMC (pmc.ncbi.nlm.nih.gov)
- Huadanosaurus (en.wikipedia.org)
- PBDB Taxon (paleobiodb.org)
- Huadanosaurus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.
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