Cladistics
· Apomorphy · Clade · Cladistic controversies · Cladistic methodology · The cladistic revolution · Cladistic taxonomy · Cladogram · Fundamental concepts of Cladistics · Synapomorphy · PhyloCode ·

In cladistics a symplesiomorphy is a character shared by a number of groups, but inherited from ancestors older than the last common ancestor; a shared primitive trait (plesiomorphy).

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