0 a very large dinosaur that ate plants and had four legs, a very long neck and tail, and a small head: --
The museum houses a 60-foot-long metallic Apatosaurus skeleton.
Marsh put the wrong skull on a skeleton of Apatosaurus and declared it a new genus, Brontosaurus.
Diplodocus reached a length of 28 m but weighed only 10 tonnes, whereas Apatosaurus was shorter at 25 m, but weighed 30 tonnes.