Their results show that all living snakes trace back to just a handful of species that survived the asteroid impact 66 million years ago, the same extinction that wiped out the dinosaurs.
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Patently false - the many species of dinosaurs lived for millions of years after the strike (which may have been one of three) and died out from other causes.
[[died out from other causes.]]
they died from smoking- According to far side-
No, they didn’t. Most dinos died within hours or days of the strike, and no dino fossils are found above that intermediate layer. Period.