Riojasaurus was a herbivore (plant-eater) that lived in South America
during the late Triassic period,
about 225 to 219 million years ago.
The name means "Rioja lizard" and was chosen because the
first specimen was found in the La Rioja Province of Argentina.
Riojasaurus was about to 33 feet (10 meters) long. It had a heavy body
and bulky legs, as well as a long neck and tail.
The structure of the animal's
skeleton suggests that it always walked on all
four legs (relatively unusual for an early dinosaur), although it
could probably rear up on its hind legs.
"Riojasaurus" means "lizard from Rioja" (after a province in Argentina).
Riojasaurus was a member of the Saurischia ("lizard-hipped") order of dinosaurs. What this means, is that although Riojasaurus was not closely related to lizards, it did have similarly shaped pelvic bones.
Riojasaurus was a Prosauropod - a member of a group of related early herbivorous (plant-eating) dinosaurs which had long necks, small heads, shorter forelimbs than hind limbs, and a thumb claw.
Riojasaurus lived between about 225 million years ago and 219 million years ago, during the Triassic period.
Riojasaurus lived in South America.
Riojasaurus was a herbivore (plant-eater).
Riojasaurus was about 33 feet (10 meters) long.
Riojasaurus weighed about 1500 pounds (680 kilograms).
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