Brachiosaurus altithorax (L/M)

Brachiosaurus is a genus of extremely large sauropod dinosaur in the family Brachiosauridae. Its fossils have been found in western North America, and it originally lived between 154 and 150 million years ago during the Kimmeridgian and Tithonian stages of the late Jurassic period. There is only one known species of this dinosaur, Brachiosaurus altithorax.