English: Phylogenetic groups: *A monophyletictaxon contains a common ancestor and all of its descendants. ** Diagram: in yellow, the group of "reptiles and birds" *A paraphyletic taxon contains its most recent common ancestor, but does not contain all the descendants of that ancestor. ** Diagram: in cyan, the reptiles *A polyphyletic taxon does not contain the most recent common ancestor of all its members. ** Diagram: in red, the group of "all warm-blooded animals"
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2010-12-07T10:07:49Z Peter coxhead 554x472 (10860 Bytes) {{Information |Description={{en|1=Phylogenetic groups: *A [[:en:monophyletic|monophyletic]] [[:en:taxon|taxon]] contains a common [[:en:ancestor|ancestor]] and all of its descendants. ** ''Diagram: in yellow,