A supertree of early tetrapods.

  title={A supertree of early tetrapods.},
  author={Marcello Ruta and Jonathan E. Jeffery and Michael I. Coates},
  journal={Proceedings. Biological sciences},
  volume={270 1532},
A genus-level supertree for early tetrapods is built using a matrix representation of 50 source trees. The analysis of all combined trees delivers a long-stemmed topology in which most taxonomic groups are assigned to the tetrapod stem. A second analysis, which excludes source trees superseded by more comprehensive studies, supports a deep phylogenetic split between lissamphibian and amniote total groups. Instances of spurious groups are rare in both analyses. The results of the pruned second… CONTINUE READING
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