2026-07-21T08:45:40+00:00A group of sauropod dinosaurs known as Brachiosaurus flourished in North America between 154 and 150 million years ago during the Late Jurassic. Elmer S. Riggs, an American paleontologist, initially described it in 1903 using fossilshe had discovered in western Colorado along the Colorado River. In honor of its relatively long arms, Riggs gave the dinosaur the general name Brachiosaurus altithorax, which is Greek for "arm lizard," and the specific name Brachiosaurus altithorax, which means "deep chest." The estimated length...
