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Monthly Archives: December 2011
Inheritance and development of primitive Dinosaurian traits in the evolution of birds (Aves)
Premise: If feathers and bipedality are the primitive condition in all basal dinosaurs, these traits would have been kept by saurischians – theropods and sauropods – after the saurischian/ornithischian split, while ornithischians lost these primitive traits and became scaly and quadripedal. Selective pressures, whatever selected for … Continue reading