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https://doi.org/10.1017/S0030605300020457, Dissanayake, R. (2004). Over long periods of time, the number of species becoming extinct can remain fairly constant, meaning that an average number of species go extinct each year, century, or millennium. Skeleton cast and model of the dodo at the Oxford University Museum. "Dorudon." In fact, the resemblance is close enough that paleontologists once thought the fossils of Dorudon were actually fossils of Basilosaurus when they were younger. "If we haven't first solved the problem that caused their extinction in the first place," Shapiro said, "it might not be worth spending all the energy and effort it would take to bring them back.". Family: Basilosauridae Time period: lived 40 to 34 million years ago in the Late Eocene Size: Body length of 5 metres.. A typical representative: Dorudon atrox Andrews 1906. As the oceans cooled, the sharks may have been forced to lower latitudes where ocean temperatures were warmer, while its prey evolved to withstand cooler temperatures of higher latitudes. This material may not be published, broadcast, rewritten, For some scientists such as Boessenecker, the answer could be relatively simple. The Reason Dodo Birds Went Extinct - Grunge.com (2) Upper premolars and molars. But enough of the Discovery Channel stuff, youre reading this to find out how this sucker went extinct. Climes became colder for all three, drier for H. heildelbergensis and Neanderthals, and wetter for H. erectus. The intense heat would have caused wildfires across the world, sending ash and dust into the atmosphere, causing similar effects to what the volcano theory describes. Scientists officially list 23 species as extinct, including the largest woodpecker in the US. And as a result, it faded from existence. For millions of years before human explorers set foot on Mauritius, the island had no large, land-based predators. how much is parking at calamigos ranch? Oddly enough, the cliched image of an overweight dodo stems all the way back to when they were first spotted, though images of thinner dodos are known to exist (including ones sketched by Jacob Van Neck who was one of the first to sketch them); but these are vastly outnumbered by ones of dodos looking like they lived on a diet of nothing but sticks of butter mixed with bacon grease.