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Pruned, stage-related topologies deriving from the standard MRP supertree: (a) Moscovian and (b) Asselian. Stage names refer to the age of the terminal units plus ghost lineage extensions of younger taxa, such as are inferred from the supertree. Filled and open circles indicate significant and informative shifts, respectively. Asterisks mark branches along which a significant or informative change in lineage splitting takes place.
