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< Monophyletic

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In fact, biologists are discussing this issue with regards to the genus Homo at this very moment, though for different reasons. For example, H. heidelbergensis and H. neanderthalensis are thought to be subspecies of H. sapiens. Therefore, Homo is not strictly monophyletic!

That's wrong. If H. heidelbergensis and H. neanderthalensis were subspecies of H.sapiens, then they would by definition HAVE common ancestral form, and that wouldn't interfere with monophylecity of Homo in any way. --Taw