File:Phylogenetic-Groups.png

Summary
Phylogenetic groups:

* A en:monophyletic en:taxon contains a common en:ancestor and all of its en:descendants. o Diagram: in yellow, the group of "reptiles and birds" * A en:paraphyletic en:taxon contains its en:most recent common ancestor, but does not contain all the descendants of that en:ancestor. o Diagram: in blue, the reptiles * A en:polyphyletic en:taxon does not contain the most recent common en:ancestor of all its members. o Diagram: in red, the group of "all warm-blooded animals"