Definition of Albertosaurus
: a genus of large, carnivorous tyrannosaurid dinosaurs of the late Cretaceous known especially from fossils found in western North America Similarly, the heaviest Cretaceous tyrannosaurs, including Albertosaurus and the larger, 16,000-pound Tyrannosaurus rex, have, relatively speaking, some of the shortest forelimbs of any theropods. — Allison V. Andors, Natural History, June 1995
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