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I see you mention dinosaurs and birds, yet that kind of contradicts your explaination of the clades...this is what i dont understand. Scientists have learned that animals reproduce after their clades, and these clades produce variety (speciation?) and they can only breed with each other etc etc
but its still accepted that a clade will eventually become something completely different, such as a dinosaur to a bird
Birds
are dinosaurs, just as they are tetrapods, vertebrates, chordates, bilatera and eukaryotes. And just as you are a primate, a mammal, a tetrapod, a vertebrate, a chordate, bilatera and a eukaryote.
Clades track ancestory not current proporties of an organism.
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