Prosauropods

The prosauropods are thought to be the ancestors of the sauropods. Both groups have long necks and small heads, but the prosauropods were generally smaller in size. Most prosauropods were herbivores, although some may have been omnivores (eating both meat and plants).

Massospondylus thumb claw

Massospondylus thumb claw

Eye socket

Thumb claw Massospondylus may have been an omnivore since it had large, serrated front teeth. It also had sharp thumb claws, which it may have used to attack prey, as well as for defense.

Small skull

Riojasaurus, at 33 ft (10 m) in length, was the largest prosauropod. As with other prosauropods, its skull was tiny compared to its massive body, and its jaws were lined with leaf-shaped teeth for shredding plant food.

Eye socket

Plateosaurus Anatomy

Anchisaurus This prosauropod was designed to walk on all fours, but it may have occasionally run on two feet. Anchisaurus had large, sickle-shaped thumb claws which would have been dangerous weapons against attackers.

Prosauropod facts

• The name prosauropod means "before sauropods."

• All prosauropods had small heads, long necks, and long tails.

• Plateosaurus was the first large dinosaur.

• Their remains have been found worldwide, except Antarctica.

View from above This view from above of Anchisaurus shows that its body was long and slender. It would have held its tail off the ground when walking.

Dinosaur Anatomy

Pulling claw The toes on the hands of Plateosaurus varied greatly in length. The thumb, the largest, ended with a huge, sharp claw.

Pulling claw The toes on the hands of Plateosaurus varied greatly in length. The thumb, the largest, ended with a huge, sharp claw.

Was this article helpful?

0 0

Post a comment