Recently researchers have found the first known swimming dinosaur.The 100 million years old dinosaur discovered in the Sahara is__________?

A. Argentinosaurus
B. Tyrannosaurus
C. Saharosaurus
D. Sosauras

The six-tonne Sosaurus aegyptiacus prowled the rivers that flowed through the Sahara desert 100 million years ago, living and catching its prey in the water, according to the new research