Page 62 - The Dinosaur Book and Other Wonders of the Prehistoric World (DK-Smithsonian)

The f irst dinosaurs

The age of dinosaurs

Eoraptor had two
different types of teeth,
indicating that it ate both
small animals and plants. Eoraptor

Herrerasaurus

The long, narrow
skull had a jaw full
of big, serrated teeth
adapted for eating meat.

Each hand had five
fingers, but only three of
the fingers had claws.

Nyasasaurus

Incomplete fossil
remains make it hard
to know if Nyasasaurus
was a true dinosaur.

Although dinosaurs evolved into some some smaller archosaur relatives with slender
of the biggest and most spectacular land bodies and long legs, such as Marasuchus,
animals the world has seen, they had which was just 28 in (70 cm) long and chased
small beginnings. About 240 million years ago, after small prey on its hind legs. The bigger,
in the early Triassic, the largest reptiles were slightly more dinosaurlike Silesaurus had a
60 powerful, crocodilelike archosaurs. These had similar build, but seems to have eaten plants,

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