Maleevosaurus Facts
Pronunciation: mah-LEE-vo-SORE-us
Name meaning: Maleev's Lizard
| Diet | Carnivore |
| Height | 2.5m |
| Length | 6m |
| Weight | 1.5 tonnes |
| Speed | 25 km/h |
| Environment | Land |
| Era | Cretaceous |
| Period | Late Cretaceous |
| Type | Theropod |
| Location | Mongolia |
Maleevosaurus was originally described as a distinct genus of large theropod dinosaur from the Late Cretaceous period of Mongolia. However, modern palaeontologists now consider it to be a junior synonym of Tarbosaurus bataar, likely representing a younger individual of that species rather than a separate genus entirely.
This formidable predator lived between 89.8 and 72.2 million years ago across the ancient landscapes of what is now Mongolia and northern China. As a member of the tyrannosaur family, Maleevosaurus possessed the classic features of these apex predators: powerful jaws lined with razor-sharp teeth, strong muscular legs built for pursuit, and relatively small but functional arms.
The specimen originally designated as Maleevosaurus measured approximately 6 metres in length and stood about 2.5 metres tall at the hip, weighing around 1.5 tonnes. This made it somewhat smaller than fully-grown Tarbosaurus adults, which supports the current understanding that it represents a juvenile or sub-adult individual. Like other large theropods, it was an active hunter that preyed upon the herbivorous dinosaurs sharing its ecosystem.
The fossil remains were discovered in the fossil-rich Nemegt Formation of Mongolia, which has yielded numerous specimens of Late Cretaceous dinosaurs and provides valuable insights into Asian dinosaur evolution during this period.
What made Maleevosaurus distinctive?
Originally thought to be distinguished by its smaller size and certain skull characteristics compared to Tarbosaurus, but these features are now understood to represent juvenile traits. It possessed the typical tyrannosaur features of massive jaws, powerful legs, and small arms with two-fingered hands.
Behaviour
As a juvenile Tarbosaurus, Maleevosaurus would have been an active predator, though likely targeting smaller prey than fully-grown adults. Young tyrannosaurs may have hunted in family groups and gradually developed the strength and techniques needed for taking down larger herbivorous dinosaurs as they matured.
Maleevosaurus FAQ
What did Maleevosaurus eat?
Maleevosaurus was a carnivore that hunted other dinosaurs. As a juvenile tyrannosaur, it likely targeted smaller prey than adult Tarbosaurus, possibly including young hadrosaurs, smaller theropods, and other dinosaurs that shared its Mongolian habitat during the
Late Cretaceous period.
How big was Maleevosaurus?
Maleevosaurus measured approximately 6 metres in length, stood 2.5 metres tall at the hip, and weighed around 1.5 tonnes. This smaller size compared to adult Tarbosaurus is one of the key pieces of evidence supporting its reclassification as a juvenile specimen.
When did Maleevosaurus live?
Maleevosaurus lived during the
Late Cretaceous period, approximately 89.8 to 72.2 million years ago. This places it in the final era of the dinosaurs, shortly before the mass extinction event that ended the age of dinosaurs.
Where was Maleevosaurus found?
Maleevosaurus fossils were discovered in Mongolia, specifically in the Nemegt Formation. This fossil-rich geological formation has yielded numerous
Late Cretaceous dinosaur specimens and is one of Asia's most important dinosaur fossil sites.
How do you pronounce Maleevosaurus?
Maleevosaurus is pronounced 'mah-LEE-vo-SORE-us'. The name honours Russian palaeontologist Evgeny Maleev, who made significant contributions to our understanding of Asian dinosaurs during the mid-20th century.
What does Maleevosaurus mean?
Maleevosaurus means 'Maleev's Lizard', named in honour of Evgeny Maleev, the Russian palaeontologist who discovered the specimen in 1955. Like most dinosaur names, it combines a person's name with the Greek word 'saurus' meaning lizard.
How fast could Maleevosaurus run?
Scientists estimate that Maleevosaurus could reach speeds of up to 25 km/h. As a juvenile tyrannosaur, it may have been more agile and potentially faster than fully-grown adults, helping it chase down smaller, quicker prey.
What type of dinosaur was Maleevosaurus?
Maleevosaurus was a large theropod dinosaur, specifically a member of the Tyrannosauridae family. However, it's now considered to be a juvenile specimen of Tarbosaurus bataar rather than a separate species, representing our evolving understanding of dinosaur growth and development.
Was Maleevosaurus related to birds?
Yes, as a theropod dinosaur, Maleevosaurus was part of the dinosaur group most closely related to modern birds. Theropods like Maleevosaurus shared many features with birds, including hollow bones, similar hip structures, and potentially some feather-like coverings, though direct evidence of feathers in tyrannosaurs remains limited.
How many Maleevosaurus fossils have been found?
Only the original specimen described by Evgeny Maleev in 1955 has been definitively assigned to Maleevosaurus. Since its reclassification as a juvenile Tarbosaurus, no additional specimens have been specifically designated as Maleevosaurus, though numerous Tarbosaurus fossils of various ages have been discovered in Mongolia.
