Dinosaurs from birds?
|February 13, 2010||Posted by DLH under Biology, Darwinism, extinction, Cambrian explosion, Natural selection, Evolutionary biology|
How well neoDarwinian evolution is established and the universal “consensus” over it is demonstrated by:
Bird-from-Dinosaur Theory of Evolution Challenged: Was It the Other Way Around?
ScienceDaily (Feb. 10, 2010) — A new study just published in the Proceedings of the National Academy of Sciences provides yet more evidence that birds did not descend from ground-dwelling theropod dinosaurs, experts say, and continues to challenge decades of accepted theories about the evolution of flight.
A new analysis was done of an unusual fossil specimen discovered in 2003 called “microraptor,” in which three-dimensional models were used to study its possible flight potential, and it concluded this small, feathered species must have been a “glider” that came down from trees. . . .
The weight of the evidence is now suggesting that not only did birds not descend from dinosaurs, Ruben said, but that some species now believed to be dinosaurs may have descended from birds.. . .
“Pesky new fossils…sharply at odds with conventional wisdom never seem to cease popping up,” Ruben wrote in his PNAS commentary. “Given the vagaries of the fossil record, current notions of near resolution of many of the most basic questions about long-extinct forms should probably be regarded with caution.”
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2010 Commentary John Ruben, Paleobiology and the origins of avian flight; PNAS published online before print February 9, 2010, doi:10.1073/pnas.0915099107 email: [email protected] . Oregon State University, Corvallis, OR 97331
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H/T to traderdrew