Why Were There No Tiny Dinosaurs? Mammals Might Have Played A Role
3 Articles
3 Articles
Why Were There No Tiny Dinosaurs? Mammals Might Have Played A Role
Dinosaurs first appeared roughly 230 million years ago and eventually became the dominant land animals, holding that status until an asteroid struck Earth 66 million years ago, causing a mass extinction of species.
Everyone knows that dinosaurs were truly huge. Some of the long-necked herbivores were the largest creatures to ever walk the Earth, such as the gigantic Argentinosaurus, which reached a length of... Research: Why weren't there tiny dinosaurs? - The blame lies with mammals - ΙΝΑΤΕΜΟΜΟΡΙΚΙ
Dinosaurs are mostly recognized as giants, from T. rex to Argentinosaurus. But the study, led by Stephanie Lackey of Princeton University and Roger Benson of the American Museum of Natural History, argues that the really interesting question is why they were never very small, like mice or songbirds. The researchers used mathematical models of energy efficiency to examine the distribution of body sizes in vertebrates. For mammals, birds and turtl…
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