Amphicoelias

Amphicoelias is an extinct genus of sauropod dinosaur.

The fossil was found in the Morrison Formation.Foster J. 2007. Appendix in Jurassic West: the dinosaurs of the Morrison Formation and their world. Indiana University Press. pp. 327–329. It lived about 150 million years ago during the Upper Jurassic of what is now Colorado. 

A herbivore, Amphicoelias was moderately sized at about 25 m (82 ft) long–roughly the same length as Diplodocus, to which it was related.

 References 

Category:Sauropods