Some Things to Do, and a Progress Update

We’ve had some good discussion and suggestions for ways to tweak the phylogeny, so keep them coming! At the bottom of this post, I have a new and improved version of the phylogeny.

In the meanwhile, we’re still trying to pull together a few last measurements for the analysis. We have gotten a few new data submissions, and these all require verification entries. There are also a few papers that can be combed for measurements. So, there is still an opportunity to make a contribution.

ODP Phylogeny Draft, 27 June 2011

ODP Phylogeny Draft, 27 June 2011

Notes on Phylogeny

Updates on non-dinosaurian archosaurs from Nesbitt 2011 analysis:

Scleromochlus – position retained from old tree (not included in Nesbitt phylogeny)
Gracilisuchus and aetosaurs resolved arbitrarily at “base” of Pseudosuchia (position of clades not resolved in Nesbitt’s analysis)
Hallopus placed as per previous version of cladogram

Other Updates:
Polacanthus is arbitrarily placed as sister to Gastonia+Tatankacephalus (i.e., made as an ankylosaurid rather than a nodosaurid; will need discrete reference to justify this decision).
Position of Tatankacephalus follows Parsons & Parsons 2009

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5 Responses to Some Things to Do, and a Progress Update

  1. Andy Farke says:

    A new paper on ankylosaur phylogeny is out; looks like we’ll be updating the tree again! “Phylogeny of the ankylosaurian dinosaurs (Ornithischia: Thyreophora),” by Thompson et al. $$$$ to read.

  2. Andrew McDonald says:

    It seems you were right to place Polacanthus in Nodosauridae after all. Ah well, one learns something new every day.

  3. nick gardner says:

    Andy Farke :
    A new paper on ankylosaur phylogeny is out; looks like we’ll be updating the tree again! “Phylogeny of the ankylosaurian dinosaurs (Ornithischia: Thyreophora),” by Thompson et al. $$$$ to read.

    Emailed the authors for a copy, cannot wait to read, as this will be interesting to see what had become a recent twist to reverse back to ye old pre-cladistics.😉

  4. nick gardner says:

    Got a copy, glad to see a critical leap in exploratory power for an analysis of ankylosaurs… this paper is heads and tails (maybe horns and clubs?) more informatoin than the last published analysis on ankylosaurs😉

  5. Hi Andy and ODPers. What is the status of ODP right now? Any timeline of when things should be completed?

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