Rhomaleopakhus
Rhomaleopakhus was a huge, long-necked plant-eater that lived in what is now China. Its front legs were extra strong and stocky, which is why its name means 'strong forearm'. It walked on four legs and used its long neck to reach leaves high up in trees.12
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as long as 4 cars parked in a row🍌as long as 110 bananas end to endas heavy as 12 cars🍉as heavy as 3600 watermelons🎒as heavy as 22 whole school classes of kids🐻❄️as heavy as 40 polar bears🏢tall enough to peek into a window on floor 2🏃could run 100 metres in 30 seconds (the fastest human needs 9.6)How big was Rhomaleopakhus compared to YOU?
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Fun facts
Rhomaleopakhus had one of the most robust (thick and strong) ulna bones of any known sauropod dinosaur.3
Its forearm bones were so strong that scientists think it evolved them separately from other sauropods, a process called convergent evolution.1
The only fossil found so far is a right forelimb, including the upper arm bone, two lower arm bones, a wrist bone, and a nearly complete hand.3
Rhomaleopakhus lived during the Late Jurassic period, about 152 to 143 million years ago.2
Its fossils were originally thought to belong to another dinosaur called Hudiesaurus, but scientists later realized they were from a different animal.1
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- Scientific name
- Rhomaleopakhus
- Named by
- Upchurch et al. 20215
- Group
- Long-necks
- Family / clade
- Mamenchisauridae5
- Classification
- Sauropodomorpha > Sauropoda5
- Age of the rocks
- 152 to 143 million years (Kimmeridgian / Tithonian)5
- Rock formations
- Kalazha5
- Countries
- China5
- Fossil records
- 1 in the Paleobiology Database5
- Discovery
- The first fossil of Rhomaleopakhus was found in 1993 by a Chinese-Japanese expedition near Qiketai in Xinjiang, China. It was named Rhomaleopakhus turpanensis in 2021 by Paul Upchurch and colleagues.13
- Still debated
- Scientists are not sure exactly how big Rhomaleopakhus was, because only its forelimb has been found. They also debate whether its strong forearms helped it walk or feed in a special way.1
Where the facts come from
- Rhomaleopakhus (en.wikipedia.org)
- PBDB Taxon (paleobiodb.org)
- Rhomaleopakhus turpanensis Upchurch, Mannion, Xu, and Barrett 2021 (gbif.org)
- Rhomaleopakhus turpanensis | Dinosaur Database by DinoAnimals.com (dinoanimals.com)
- Rhomaleopakhus in The Paleobiology Database (CC BY 4.0): age, places, rock formations, classification.
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