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The age of reptiles

through millions of years

in the Mesozoic era in time

in the wake of the Permian Triassic extinction

These times were significant in the abundance of evolutionary activity

186 million years ago

96% of all marine life went extinct

Archaic birds evolved into theropod dinosaurs

then large toothless birds

iguanodon, Megalosaurus

Plesiosaurus, and pterodactylus

extreme temperatures

high heat capacity

lots of humidity