Temporal range: Late Cretaceous, 90Ma
Maleevus is a genus of ankylosaurid dinosaur that is known only from the upper jawbone and part of the skull discovered in 1952 by Soviet palaeontologist Evgenii Aleksandrovich Maleev. It has been estimated that Maleevus was about six meters (19.5 feet) long. It is also believed that the fossils came from the late Cretaceous, around 90 million years ago.
The bone fragments, uncovered in Mongolia, were originally named by Maleev (1952) as a species of Syrmosaurus, Syrmosaurus disparoserratus. The material is so similar to fossils of another Mongolian ankylosaur, Talarurus, that Maryanska (1977) renamed it as another species of the Talarurus genus: Talarurus disparoserratus. Having determined that Syrmoosaurus is a junior synonym of Pinacosaurus, Soviet palaeontologist Tatyana Tumanova named the material as a new genus Maleevus in honor of Maleev in 1987. The type species remains Syrmosaurus disparoserratus, the combinatio nova is Maleevus disparoserratus.
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