Daspletosaurus

From Academic Kids

Missing image
Dasp1.png
Image comparing the size of Daspletosaurus and a human.

The theropod dinosaur Daspletosaurus, or frightful lizard had a head as large as the later Tyrannosaurus rex, with just as vicious teeth. With such large teeth, this carnivorous dinosaur may have been able to attack and kill heavily plated species of dinosaurs, like ankylosaurs. The common name of Daspletosaurus is daspletosaur, or in plural daspletosaurs.

It has been suggested that Daspletosaurus is a direct ancestor to Tyrannosaurus. The massive, stocky build of the two tyrannosaurids and certain similarities in skull structures seem to be indicators of a close phylogenetic relationship between the two genera. Some have even gone further to suggest that Daspletosaurus is actually a species of Tyrannosaurus (Daspletosaurus torosus = Tyrannosaurus torosus), but this has not been universally accepted.

Currently, one species of Daspletosaurus, D. torosus, has been officially recognized. However, a recent tyrannosaur find in Montana is thought to be that of a new (still un-named) daspletosaur species. The skull of this find seems to indicate a more "Tyrannosaurus-like" animal than D. torosus, possibly indicating a intermediate form between D. torosus and T. rex. Most of the specimens found were in Alberta, others were also found in New Mexico.


Weight 4 short tons (3.6 tonnes)

Length 28 feet (8.5 metres)

Found Alberta, Canada; Montana, USA

Period Upper Cretaceous

Family Tyrannosauridaede:Daspletosaurus pl:Daspletozaur nl:Daspletosaurus pt:Daspletossauro

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