when selection acted on one lineage to promote flight and on the other to promote the traits of bipedal dinosaurs.
Good grief. Why does a lamen like me know more about natural selection than this guy? Unless the supposed creature evolved fully functioning wings and feathers immediately (as Stephen Jay Gould proposed), then natural selection would work AGAINST a creature that had any non-functioning features. How does half a wing benefit the host? Would they not be selected out? Can natual selection see the future? "Let's save this odd lizard with wings so that in a million years maybe it could fly". That's not how it works. The entire evolutionary concept of random evolution working over millions of years hand in hand with natural selection is illogical dichotomy. Those two concepts are completley opposed to each other.
