- Any of various carnivorous dinosaurs of the genus Allosaurus of the late Jurassic and early Cretaceous Periods. Allosaurs were similar to but smaller than tyrannosaurs.
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Examples from the Web for allosaurus
When alive it was probably about half the bulk of the Allosaurus mentioned above.Extinct Monsters
H. N. Hutchinson
As compared with its predecessor Allosaurus, the Tyrannosaurus is much more massively proportioned throughout.
Some such type of skin as this, in default of better evidence, we may ascribe to the Allosaurus.
Immediately Nelson swiftly sighted at the other eye and fired, just as the allosaurus' shadow filled the threshold.