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April 02, 2007
A sore threat
Jose Guardia links a very ironic post about how global warming may have triggered the rise of mammals: The researchers believe our 'ancestors', and those of all other mammals on earth now, began to radiate around the time of a sudden increase in the temperature of the planet - ten million years after the death of the dinosaurs.I'm beginning to understand why the Al-o-saurus is worried. Jose concludes his post by saying "Bring it on!" Al-o-saur, I feel your pain! (And what about the pain of the Sorosaur?) posted by Eric on 04.02.07 at 11:06 AM
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My understanding is that it was more the restoration of oxygen which allowed the synapsids (i.e, us) to return. Under low oxygen, the dinosaur lung was (and, in birds, is) far more efficient. c.f., Peter Ward, Out of Thin Air David Ross · April 2, 2007 06:49 PM Post a comment
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The big problem with the study is that it pretty much ignores mamalian lines that didn't survive to modern lines. The focus on mammals post Cretaceous is entirely the media's doing. BTW, with one notable exceptions (rodents) all placental mammal orders first appeared during the Jurassic or Cretaceous.