brach·i·o·saur | \ ˈbra-kē-ō-ˌsȯr 
\
\Definition of brachiosaur
: any of a genus (Brachiosaurus) of very large sauropod dinosaurs of the Late Jurassic period having a massive body, a very long neck, and forelegs longer than hind legs
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Time Traveler for brachiosaur
The first known use of brachiosaur was in 1912
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