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as long as 6 dogs nose to tail🍌as long as 33 bananas end to end🍉as heavy as 53 watermelons🧸as heavy as 14 kindergarten kids🎒as heavy as 8 school kids🏃could run 100 metres in 7.7 seconds (the fastest human needs 9.6)How big was Xuanhanosaurus compared to YOU?
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Fun facts
Xuanhanosaurus had a forearm that was relatively massive and long, which is unusual for a meat-eating dinosaur of its time.1
Its humerus, the upper arm bone, was straight and had a medial deltopectoral crest, a feature that helped attach strong muscles.1
The ratio of the maximum length of its humerus to its radius was 1.3, which scientists say is extremely conservative for a carnosaur.1
Xuanhanosaurus had a metacarpal III that was comparatively massive, and its metacarpal IV was short and light.1
The fossils come from the Lower Shaximiao Formation, which is Middle Jurassic in age, about 170 to 168 million years old.2
Most asked questions about Xuanhanosaurus
?How big was Xuanhanosaurus?
About 4.8 metres (16 feet) long and weighed around 265 kilograms (585 pounds).4
?Did Xuanhanosaurus walk on four legs?
Probably not. The scientist who first described it thought it might, but later experts say it walked on its hind legs like other meat-eating dinosaurs.4
?What does Xuanhanosaurus mean?
Xuanhanosaurus means 'Xuanhan lizard,' named after Xuanhan County in Sichuan, China, where it was found.4
?When did Xuanhanosaurus live?
It lived during the Middle Jurassic, about 166 million years ago.4
?What did Xuanhanosaurus eat?
It was a meat-eater (theropod dinosaur) that likely hunted other animals with its sharp teeth and strong arms.4
?Why did Xuanhanosaurus have strong arms?
Its strong arms may have been useful for catching prey, even though it walked on two legs.4
Ask Rex about Xuanhanosaurus
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For dino experts
- Scientific name
- Xuanhanosaurus
- Named by
- Dong 19846
- Group
- Meat-eating dinos
- Family / clade
- Piatnitzkysauridae6
- Classification
- Theropoda6
- Age of the rocks
- 171 to 168 million years (Bajocian)6
- Rock formations
- Shaximiao6
- Countries
- China6
- Fossil records
- 1 in the Paleobiology Database6
- Discovery
- Xuanhanosaurus was named by Chinese paleontologist Dong Zhiming in 1984. The fossils were found in the Sichuan Basin, and the dinosaur was described as a new genus and species.12
- Still debated
- Scientists debate whether Xuanhanosaurus belongs to the Megalosauridae family or to a group called Piatnitzkysauridae, so its exact family tree is still uncertain.3
Where the facts come from
- A new theropod dinosaur from the Middle Jurassic of Sichuan Basin (eurekamag.com)
- PBDB Collection (paleobiodb.org)
- PBDB Taxon (paleobiodb.org)
- Xuanhanosaurus (en.wikipedia.org)
- PaleoCodex :: Xuanhanosaurus (paleocodex.com)
- Xuanhanosaurus 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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