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Research Article

A Basal Sauropodomorph (Dinosauria: Saurischia) from the Ischigualasto Formation (Triassic, Carnian) and the Early Evolution of Sauropodomorpha

  • Ricardo N. Martinez mail,

    martinez@unsj.edu.ar

    Affiliation: Museo de Ciencias Naturales, San Juan, Argentina

    X
  • Oscar A. Alcober

    Affiliation: Museo de Ciencias Naturales, San Juan, Argentina

    X
  • Published: February 16, 2009
  • DOI: 10.1371/journal.pone.0004397
  • Featured in PLOS Collections

Reader Comments (3)

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Confusing Labeling

Posted by keesey on 17 Feb 2009 at 19:20 GMT

This diagram makes it look as though Silesaurus is an ornithischian and Guaibasaurus is a theropod, when the results actually place them in ambiguous polytomies (as the text makes clear). Based on this study, Silesaurus could just as easily be a saurischian or a non-dinosaur, and Guaibasaurus could just as easily be a sauropodomorph (even more basal than Panphagia!) or a non-eusaurischian. If the nodes for "Ornithischia" and "Theropoda" had been shifted to the right a bit, this would have been clearer.


RE: Confusing Labeling

keesey replied to keesey on 17 Feb 2009 at 19:22 GMT

(That's Figure 10, in case that isn't clear. Sorry, new to this system of making notes.)