there is a theory which says that dinosaurs were wiped out by a deadly disease...now i need a fully detailed answer on how far true is this theory..pliz help!!
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Back in the 1980s, dinosaurologist Robert Bakker blamed dinosaur extinction on "biogeographic chaos." In his view, mass migration of dinosaurs exposed them all to unfamiliar diseases, parasites and predators. Baker noted that a disease introduced into Africa by Indian cattle --rinderpest--led to massive loss of life among african ungulates. The same thing happened to dinosaurs, he asserts, when migrating taxa brought various diseases with them.
But the theory is almost certainly false. For one thing, there is ample evidence for dinosaur migration long before the final extinction. Radiations of various taxa across the bering bridge preceded the final demise; likewise, Alamosaurus and kritosaurus crossed the north-south america connection well before the end, and without any known ill effects. Furthermore, dinosaur extinction essentially coincided with the chicxulub impact, so the disease theory is superfluous as well as implausible.
But the theory is almost certainly false. For one thing, there is ample evidence for dinosaur migration long before the final extinction. Radiations of various taxa across the bering bridge preceded the final demise; likewise, Alamosaurus and kritosaurus crossed the north-south america connection well before the end, and without any known ill effects. Furthermore, dinosaur extinction essentially coincided with the chicxulub impact, so the disease theory is superfluous as well as implausible.
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that never happened dinosaurs died millions of years ago by astroroids not diseases so of them who were alive died of drought (dehydration) becos of lack of water and food leving behide their bones
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yes