出典:Wikipedia
出典:『Wikipedia』 (2011/04/10 22:42 UTC 版)
Rayososaurus is a genus of plant-eating sauropod dinosaur of the superfamily Diplodocoidea. It was found in the Rayoso Formation, in Patagonia, Argentina and lived about 99 million years ago (during the Early Cretaceous). The type species is R. agrionensis, named by Argentinian paleontologist Jose Bonaparte in 1996.