[Taxacom] Exgroup notations (now in some Wikipedia classifications) are very helpful

Kenneth Kinman kinman at hotmail.com
Thu Dec 13 07:09:22 CST 2018


Dear All,
     I am happy to report that while looking at some classifications on Wikipedia, I found a few cases where paraphyletic taxa (mother groups) were being classified in a very helpful way.  In the wikipedia account for Crustacean, the Hexapods are listed at the end under the notation "Cladistically<https://en.wikipedia.org/wiki/Cladistics> included but traditionally excluded taxa".  It's very similar to my exgroup markers, such as {{Hexapoda}}.  I would only note that a more concise exgroup marker can more readily be moved up and listed right next to its closest relatives instead of just being tacked on to the end, but that is just a minor quibble.
     The same notation is used in the Charophyta account for the exgroup Embryophyta.  And there is a similar notation for Aves in the Reptile account at Wikipedia: "Aves<https://en.wikipedia.org/wiki/Bird> (birds) (included in cladistic<https://en.wikipedia.org/wiki/Cladistics> analyses, but excluded in traditional taxonomy).  I would certainly like to see more of this on Wikipedia.  Exgroup markers or notations are a Win-Win solution.

                  ------------------------Ken

P.S.  Would love to eventually see similar exgroup notations in other Wikipedia taxon accounts, such as Cetacea in the Artiodactyla account, Mammalia in the Therapsid account, and Tetrapoda in the Sarcopterygii account.

                  https://en.wikipedia.org/wiki/Crustacean

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