Κλάδος: Διαφορά μεταξύ των αναθεωρήσεων

Contrary to the Linnaean systems where taxons are ''defined'' by describing key traits (]][[apomorphy|apomorphies]]), cladisc taxons (clades) are ''named''. Three methods of defining clades have been proposed in cladistics: node-, stem-, and apomorphy-based: