Why do birds descending from dinosaurs rule out reptiles descending from dinosaurs?
Given the huge amount of dinosaur races, wouldn't it be more likely that different dinosaur races evolved into different types of animals over time? This would make them equally related to dinosaurs, but not the same dinosaurs. For all we know their common ancestor could be a pre dinosaur animal even though both were dinosaurs at one point in time.
Actually dinosaurs (and birds now) are reptiles, but they're not lizards. While dinosaurs and lizards (and crocodilians) are descended from the same family tree, the dinosaurs and birds have very distinguishable anatomic differences. Dinos and birds have their legs stretched under them, while the rest of the reptiles have their legs stretched out of the sides.
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