Lythronax facts for kids
Quick facts for kids Lythronax |
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| Reconstructed skeleton alongside those of other tyrannosaurs, Science Center of Iowa | |
Scientific classification  |
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| Kingdom: | Animalia |
| Phylum: | Chordata |
| Clade: | Dinosauria |
| Clade: | Saurischia |
| Clade: | Theropoda |
| Family: | †Tyrannosauridae |
| Subfamily: | †Tyrannosaurinae |
| Genus: | †Lythronax Loewen et al., 2013 |
| Type species | |
| †Lythronax argestes Loewen et al., 2013
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Lythronax is an extinct genus of tyrannosaurid theropod dinosaur. It lived about 80 million years ago (mya) in what is now southern Utah. L. argestes is the oldest known tyrannosaurid based on its stratigraphic position.
Comparisons to its close relatives suggest that Lythronax would have been about 8 m (26.2 ft) long, with a weight of around 2.5 tonnes (5,500 lb) and had a large skull filled with sharp teeth.
The rostrum is comparatively short: it makes up less than two thirds of the total skull length. The whole skull is very broad, 0.4 times as wide as long. Overall, the skull is similar to that of Tyrannosaurus and Tarbosaurus. Its robust jaws have two sizes of teeth: its first five teeth are much larger than the other six. Behind the skull, the rest of the skeleton is similar to that of other tyrannosaurids.
Images for kids
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Life restoration showing hypothetical feathers
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Reconstructed skeleton at Science Center of Iowa
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Skull reconstruction (A), known skull bones (B), and selected skull bones of the holotype (C–J)
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Paleomap of North America during the Campanian age; Lythronax lived in southern Laramidia (lower left).
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Correlation between sea level change and evolutionary diversification of Tyrannosauroidea as hypothesized by Loewen and colleagues in 2013
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Reconstructed skeleton in front view, UMNH
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See also
In Spanish: Lythronax argestes para niños
