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A probabilistically time-scaled 1,000-taxon phylogenetic hypothesis for Mesozoic dinosaurs and the origins of flight and crown-birds

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1. A probabilistically time-scaled 1,000- taxon phylogenetic hypothesis for Mesozoic dinosaurs and the origins of flight and crown-birds Graeme T. Lloyd David W. Bapst…
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  • 1. A probabilistically time-scaled 1,000- taxon phylogenetic hypothesis for Mesozoic dinosaurs and the origins of flight and crown-birds Graeme T. Lloyd David W. Bapst @GraemeTLloyd @dwbapst Katie E. Davis Matt Friedman @drkatiedavis @Friedman_Lab
  • 2. When? 1. Dinosaurs 2. Flight 3. Crown birds
  • 3. Simultaneous inference Lee et al 2014
  • 4. A posteriori time-scaling paleotree strap
  • 5. A posteriori time-scaling + paleotree strap
  • 6. A posteriori time-scaling + = paleotree strap
  • 7. A posteriori time-scaling Arbitrary Arbitrary addition(s) Derstler 1982 Minimum branch-length Laurin 2004 Branch-sharing Ruta et al 2006; Brusatte et al 2008
  • 8. A posteriori time-scaling Arbitrary Probabilistic cal3 Bapst 2013 Nowak Nowak et al 2013 Hedman method Lloyd and Friedman in prep Arbitrary addition(s) Derstler 1982 Minimum branch-length Laurin 2004 Branch-sharing Ruta et al 2006; Brusatte et al 2008
  • 9. A posteriori time-scaling Arbitrary Probabilistic cal3 Bapst 2013 Hedman method Lloyd and Friedman in prep
  • 10. cal3 method * * * * * * * * * * Bapst 2013
  • 11. cal3 method * * * * * * * * * * Bapst 2013
  • 12. cal3 method * * * * * * * * * * Bapst 2013
  • 13. cal3 method * * * * * * * * * * Bapst 2013
  • 14. Hedman method Target node Outgroup taxon TIME Hedman 2010; Lloyd and Friedman in prep
  • 15. Hedman method Target node Outgroup taxon TIME Hedman 2010; Lloyd and Friedman in prep
  • 16. Phylogenetic approach Pisani et al. 2002 Lloyd et al. 2008
  • 17. Pipeline Collect data graemetlloyd.com
  • 18. Pipeline Collect data Reconcile taxonomy
  • 19. Pipeline Collect data Reconcile taxonomy Define cutoff
  • 20. Pipeline Collect data Reconcile taxonomy Define cutoff Consensus vs. MPTs
  • 21. Pipeline Taxonomy tree ABCDEFGHIJKL Class Order Family Genus
  • 22. Pipeline Taxonomy tree Safe Taxon. Reduction github.com/graemetlloyd/Claddis Wilkinson 1995
  • 23. Taxonomy tree Safe Taxon. Reduction Weights Pipeline
  • 24. Taxonomy tree Safe Taxon. Reduction Weights Inference Pipeline
  • 25. Taxonomy tree Safe Taxon. Reduction Weights Inference Pipeline
  • 26. Results Hedman cal3
  • 27. Dinosauria Hedman cal3
  • 28. Dinosauria 2.6% 9.6% Hedman cal3
  • 29. Dinosauria 0.2% 1.0% Hedman cal3 -
  • 30. Aves Hedman cal3
  • 31. Aves Hedman cal3
  • 32. Crown birds Hedman cal3
  • 33. Crown birds cal3 Hedman 95% HPD
  • 34. Crown birds cal3 Hedman Molecular Clock 95% HPD
  • 35. Crown birds cal3 Hedman Molecular Clock 95% HPD Morphological Clock
  • 36. Conclusions Hedman cal3
  • 37. Conclusions Hedman cal3
  • 38. Conclusions Hedman cal3
  • 39. Conclusions Hedman cal3
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