Umarsaurus Facts
Pronunciation: OO-mar-SORE-us
Name meaning: Umar's Lizard
| Diet | Herbivore |
| Height | 3.5m |
| Length | 10m |
| Weight | 4.5 tonnes |
| Speed | 25 km/h |
| Environment | Land |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Ornithopod |
| Location | Mongolia |
Umarsaurus was a large ornithopod dinosaur that roamed the ancient floodplains of what is now Mongolia during the Late Cretaceous period, between 72 and 66 million years ago. This impressive herbivore lived alongside other famous dinosaurs like Tarbosaurus and Therizinosaurus in the rich ecosystems preserved in the Nemegt Formation.
As a member of the duck-billed dinosaur family, Umarsaurus possessed the characteristic features that made ornithopods so successful. It could move both on two legs when running and on all fours when feeding, giving it excellent versatility in its environment. The creature's powerful hind legs allowed it to reach considerable speeds when escaping predators, whilst its robust build suggests it was well-adapted to processing tough plant material.
Umarsaurus fed on a variety of vegetation, using its sophisticated dental batteries to grind up ferns, conifers, and flowering plants. Like other large ornithopods, it would have lived in herds, providing safety in numbers against the fearsome predators of its time. The partial remains discovered so far suggest this was one of the larger herbivores in its ecosystem, contributing significantly to the diverse community of Late Cretaceous Mongolia.
What made Umarsaurus distinctive?
Umarsaurus was distinguished by its large size amongst ornithopods and robust vertebral column structure. The partial pelvis shows adaptations for supporting considerable body weight, whilst the vertebrae suggest a powerfully built torso typical of large duck-billed dinosaurs.
Behaviour
Umarsaurus likely lived in herds for protection against predators like Tarbosaurus, moving seasonally to follow food sources across the ancient Mongolian landscape. Evidence suggests these ornithopods were highly social, possibly communicating through visual displays and vocalizations to coordinate group movements and warn of approaching danger.
Discovery
Umarsaurus was first described by Rinchen Barsbold in 1981. The original fossils were discovered at Nemegt Formation, Ömnögöv Province, Mongolia.
Umarsaurus FAQ
What did Umarsaurus eat?
Umarsaurus was a herbivore that fed on a variety of
Late Cretaceous plants including ferns, conifers, and early flowering plants. Like other ornithopods, it used sophisticated dental batteries to grind tough vegetation, allowing it to extract maximum nutrition from the available plant life in ancient Mongolia.
How big was Umarsaurus?
Umarsaurus was a large dinosaur, reaching approximately 10 metres in length and standing about 3.5 metres tall at the hip. It weighed around 4.5 tonnes, making it one of the more substantial herbivores in its
Late Cretaceous ecosystem.
When did Umarsaurus live?
Umarsaurus lived during the
Late Cretaceous period, approximately 72 to 66 million years ago. This places it among the last generation of dinosaurs before the mass extinction event that ended the age of dinosaurs.
Where was Umarsaurus found?
Umarsaurus fossils were discovered in Mongolia, specifically in the famous Nemegt Formation in Ömnögöv Province. This geological formation is renowned for preserving some of Asia's most spectacular dinosaur fossils from the
Late Cretaceous period.
How do you pronounce Umarsaurus?
Umarsaurus is pronounced 'OO-mar-SORE-us', with emphasis on the first and third syllables. The name combines 'Umar' with the Greek word 'saurus' meaning lizard.
What does Umarsaurus mean?
Umarsaurus means 'Umar's Lizard', named to honour Umar's contributions to palaeontological research in Mongolia. Like many dinosaur names, it combines a personal dedication with the Greek suffix 'saurus' meaning lizard.
How fast could Umarsaurus run?
Umarsaurus could likely reach speeds of up to 25 km/h when running on its powerful hind legs. This speed would have been crucial for escaping from large predators like
Tarbosaurus that shared its environment.
What type of dinosaur was Umarsaurus?
Umarsaurus was an ornithopod dinosaur, specifically a member of the duck-billed dinosaur family. These herbivorous dinosaurs were characterised by their sophisticated teeth, ability to walk on both two and four legs, and often elaborate head crests.
Was Umarsaurus related to birds?
Umarsaurus was not directly related to birds. As an ornithopod, it belonged to a different branch of the dinosaur family tree than the theropods that gave rise to modern birds. However, all dinosaurs, including Umarsaurus, share common ancestry with birds.
How many Umarsaurus fossils have been found?
Umarsaurus is known from limited fossil remains including a partial vertebral column, partial pelvis, and some ribs. Like many dinosaur species, the fossil record is incomplete, but these remains provide valuable insights into this
Late Cretaceous herbivore.
