出典:Wiktionary
出典:『Wiktionary』 (2025/09/23 20:18 UTC 版)
cladistics (uncountable)
出典:Wikipedia
出典:『Wikipedia』 (2011/07/30 23:37 UTC 版)
Cladistics (Ancient Greek: κλάδος, klados, "branch") is a method of classifying species of organisms into groups called clades, which consist of an ancestor organism and all its descendants (and nothing else). For example, birds, dinosaurs, crocodiles, and all descendants (living or extinct) of their most recent common ancestor form a clade. In the terms of biological systematics, a clade is a single "branch" on the "tree of life", a monophyletic group.