Early tetrapod relationships revisited

@article{Ruta2003EarlyTR,
  title={Early tetrapod relationships revisited},
  author={Marcello Ruta and Michael I. Coates and Donald L. J. Quicke},
  journal={Biological Reviews},
  year={2003},
  volume={78}
}
In an attempt to investigate differences between the most widely discussed hypotheses of early tetrapod relationships, we assembled a new data matrix including 90 taxa coded for 319 cranial and postcranial characters. We have incorporated, where possible, original observations of numerous taxa spread throughout the major tetrapod clades. A stem‐based (total‐group) definition of Tetrapoda is preferred over apomorphy‐ and node‐based (crown‐group) definitions. This definition is operational, since… 

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