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Old 12-12-2019, 07:36 AM
Andy L is offline
Join Date: Oct 2000
Posts: 7,281
Originally Posted by Colibri View Post
You misunderstand. All of the first-mentioned groups (except trees, and they are being used as a stand-in for multicellular green plants) are monophyletic. But if they are removed, the second group becomes paraphyletic. For the second groups to be monophyletic, the first groups must be considered to be part of them. (And "whales" is being used in the broad sense, to include dolphins and other toothed whales. In that sense all cetaceans are monophyletic.)
Got it. My apologies.