Dinosaurs were not in this first evolutionary wave

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All of these “couldn’ts” together built up the orthodox view of dinosaurs as a dynasty of flawed creatures. (Realistic dinosaur costume for sale)And it was this orthodoxy that suddenly seemed so wrong as I stood looking at the Brontosaurus in the Great Hall. (walking dinosaur costume)The public image of dinosaurs is tainted by extinction. It’s hard to accept dinosaurs as a success when they are all dead. But the fact of ultimate extinction should not make us overlook the absolutely unsurpassed role dinosaurs played in the history of life.

Creatures with four legs first crawled slowly out of the ancient swamps 400 million years ago. Dinosaurs were not in this first evolutionary wave, nor in the second or third. Contrary to the cartoonists’ view of geological history, dinosaurs aren’t the most ancient of life forms, not even close. Dinosaurs as a clearly defined group don’t make their grand entrance until 200 million years after the first four-legged beasts emerged from the primordial swamps. (real dinosaur model) By the time they appear in the land ecosystem, the woodlands and waterways were already full of creatures, large and small, flesh-eater and vegetarian. For a brief twilight zone—five million years, short by geological standards—these earliest dinosaurs shared the terrestrial realm with a host of older clans. But then the dinosaurs seized power. They took over all the large roles in the land ecosystem. They filled the offices of mega-predator and mega-herbivore. Their control of the land ecosystem was complete. No non dinosaur larger than a modern turkey walked the land during the Age of Dinosaurs.