Κλάδος: Διαφορά μεταξύ των αναθεωρήσεων
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→Clade names: rm nonsense sentence per talk, but more work remains to be done. |
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Γραμμή 25:
* In apomorphy (derived feature)-based naming, A would refer to the clade identified by a feature synapomorphic (sharing a derivation) with a feature in specimen (taxon) X. This definition is basically similar to the Linnaean system.
Differences between a Linnaean/apomorphy-based clades and a node-based ones become obvious when the phylogenetic hypothesis changes. When two species previously considered closely related are found to belong to different groups (e.g. the [[giant panda]] and [[red panda]]), one of the species will be taken out of the Linnaean unit (in this case the "pandas" of the [[Ursidae|bear family]]) and transfered to a more appropriate unit or given it's own (the [[Ailuridae]]). In cladistics, the unit "pandas", the giant panda + red panda remain, but the clade is now known to contain all [[Ursidae|bears]] as well as [[Mustelidae|mustelids]], [[Procyonidae|racoons and kind]], [[skunk]]s and [[Pinniped|seals]].<ref>[http://journals.cambridge.org/action/displayAbstract?fromPage=online&aid=285902 Wesley-Hunt, Gina D., and John J. Flynn (2005). "Phylogeny of the Carnivores". Journal of Systematic Palaeontology no 3: pp 1-28.]</ref>
===Clades as constructs===
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