Brachiosaurus was an unusual dinosaur that lived 155.7 million to 150.8 million years ago during the mid- to late Jurassic Period. Specimens have been found primarily in the fossil-rich Morrison ...

Brachiosaurus was not a swampbound dinosaur. The magnificent “arm lizard”, over 80 feet long from snout to tail tip, trod over Late Jurassic, fern-covered floodplains now preserved in the 150 million ...