Class aves

According to L.M. Chiappe and G.J. Dyke (2002), "most researchers agree that birds are theropod dinosaurs." Even before this consensus formed, the other candidates for birds' ancestors were all reptiles, specifically turtles, lizards, crocodylomorphs, pterosaurs, and other kinds of dinosau...

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I stand by my position that Weston's girlfriend wins the argument. Reptilia is a monophyletic group that includes all birds and extinct dinosaurs. Excluding birds because they are the only extant warmblooded, feathered members of the clade represents historical bias rather than evolutionary relatedn...

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... become extremely interested in the evolutionary relation between aves and reptiles. My girlfriend and brother butt heads over the topic. My ... All the research I've done shows that aves and reptiles differ on the class level! Despite all of the anatomical similarities between them, the ...

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... Bird wings are formed from feathers growing on the whole of the forelimb: http://www.ucmp.berkeley.edu/vertebrates/flight/aves.html Insects are a law unto themselves, and very often have 2 pairs of wings: http://upload.wikimedia.org/wikipedia/commons/thumb/7/7c/Tau_Emerald_inflight_edit.jpg/300px-Tau_Emerald_inflight_edit.jpg ...

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... will go on to be the predecessor of a new lineage of organisms - ie Class Aves. At what point a new species emerges is not necessarily clear and i said you are not answering ...

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