Dinosaurs Shrank For 50 Million Years To Become Birds New Scientist It took 50 million years of continual shrinking to turn massive, lumbering dinosaurs into the first small flying birds. “no other dinosaur group has undergone such a long and extended period of. July 31, 2014 at 2:02 pm. dinosaurs were the original incredible shrinking animals. more than 50 million years of steady miniaturization and rapidly changing bodies transformed the massive animals.
Dinosaurs Shrank For 50 Million Years To Become Birds New Scientist Dinos ‘quickly’ shrunk into birds. this steady miniaturization led some dinosaurs to find ways to better adapt for the long term survival of their line. the dinosaur ancestors of birds shrank steadily for more than 50 million years. left to right: a neotheropod (from about 220 million years ago), a tetanuran, a coelurosaur, a paravian and. A study published in science last year found that the miniaturization process began much earlier than scientists had expected. some coelurosaurs started shrinking as far back as 200 million years. Today's birds evolved from dinosaurs that shrank continuously for 50 million years, researchers say. dinosaurs first emerged about 245 million years ago, and they came to dominate the planet. they. By 25 million years later, that ancestor had shrunk to 46 kg, but it was still giving rise to lineages like the allosaurs and tyrannosaurs. ten million years and many branches (including the.
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