allosaur

noun
al·​lo·​saur | \ˈa-lə-ˌsȯr \

Definition of allosaur 

: any of a family (Allosauridae) of large theropod dinosaurs usually having three clawed digits on each arm and leg and living from the Late Jurassic to the early Cretaceous period especially : allosaurus

First Known Use of allosaur

circa 1934, in the meaning defined above

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The first known use of allosaur was circa 1934

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