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Albertosaurus Metatarsal Bone, from Judith River Formation, Montana USA (No.153)

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Albertosaurus Metatarsal Bone, from Judith River Formation, Montana USA (No.153)Albertosaurus Metatarsal Bone
from Judith River Formation, Montana USA

Measurements Approx.
Height - 4.7 cm
Length
 - 7.4 cm
Width - 5 cm



The earliest dinosaur remains to be found in Alberta, Canada, were Albertosaurus bones. Since the first discovery in 1884, by J. B. Tyrrell, fossils of more than 30 individuals have been recovered, providing scientists with a more detailed knowledge of Albertosaurus anatomy than is available for most other tyrannosaurids.

It was one of the most abundant predators of the North America Cretaceous plains, and despite its great weight it was probably a fast runner, running down its prey.

   

The Albertosaurus is very similar to its later cousin Tyrannosaurus, but is only about half the size. It is much better known as its remains are more numerous. Its skull is heavier, with smaller gaps in it surrounded by thicker struts of bone, the muzzle is longer and lower and also much wider, and the jaw is considerably shallower. The arms, although small, are a little larger than those of Tyrannosaurs.


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