[ăl′ə-sôrəs]allosaur (ălə-sôr′)

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.

The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

Examples from the Web for allosaurus

Historical Examples of allosaurus

  • When alive it was probably about half the bulk of the Allosaurus mentioned above.

    Extinct Monsters

    H. N. Hutchinson

  • Immediately Nelson swiftly sighted at the other eye and fired, just as the allosaurus' shadow filled the threshold.

  • Some such type of skin as this, in default of better evidence, we may ascribe to the Allosaurus.


    William Diller Matthew

  • As compared with its predecessor Allosaurus, the Tyrannosaurus is much more massively proportioned throughout.


    William Diller Matthew