Show simple item record Cau, Andrea Dyke, Gareth J. Lee, Michael S. Y. Naish, Darren
dc.coverage.temporal Mesozoic
dc.coverage.temporal Jurassic
dc.coverage.temporal Cretaceous 2014-08-01T14:22:28Z 2014-08-01T14:22:28Z 2014-08-01
dc.identifier doi:10.5061/dryad.jm6pj
dc.identifier.citation Lee MSY, Cau A, Naish D, Dyke GJ (2014) Sustained miniaturization and anatomical innovation in the dinosaurian ancestors of birds. Science 345(6196): 562-566.
dc.description Recent discoveries have highlighted the dramatic evolutionary transformation of massive, ground-dwelling theropod dinosaurs into light, volant birds. Here, we apply Bayesian approaches (originally developed for inferring geographic spread and rates of molecular evolution in viruses) in a different context: to infer size changes and rates of anatomical innovation (across up to 1549 skeletal characters) in fossils. These approaches identify two drivers underlying the dinosaur-bird transition. The theropod lineage directly ancestral to birds undergoes sustained miniaturization across 50 million years and at least 12 consecutive branches (internodes) and evolves skeletal adaptations four times faster than other dinosaurs. The distinct, prolonged phase of miniaturization along the bird stem would have facilitated the evolution of many novelties associated with small body size, such as reorientation of body mass, increased aerial ability, and paedomorphic skulls with reduced snouts but enlarged eyes and brains.
dc.relation.haspart doi:10.5061/dryad.jm6pj/1
dc.relation.haspart doi:10.5061/dryad.jm6pj/2
dc.relation.haspart doi:10.5061/dryad.jm6pj/3
dc.relation.haspart doi:10.5061/dryad.jm6pj/4
dc.relation.haspart doi:10.5061/dryad.jm6pj/5
dc.relation.haspart doi:10.5061/dryad.jm6pj/6
dc.relation.isreferencedby doi:10.1126/science.1252243
dc.relation.isreferencedby PMID:25082702
dc.subject Phylogenetics
dc.subject Bayesian Inference
dc.subject Macroevolution
dc.subject Paleobiology
dc.subject Bird Origins
dc.subject Evolutionary Rates
dc.subject Morphological Evolution
dc.subject Evolutionary Trends
dc.subject BEAST
dc.subject Herpetology
dc.subject Vertebrate Paleontology
dc.subject Stratigraphy
dc.subject Body Size
dc.title Data from: Sustained miniaturization and anatomical innovation in the dinosaurian ancestors of birds
dc.type Article
dwc.ScientificName Dinosauria
dwc.ScientificName Theropoda
dwc.ScientificName Avialae
dwc.ScientificName Aves
dwc.ScientificName Saurischia
dwc.ScientificName Tetanurae
dwc.ScientificName Maniraptora
dwc.ScientificName Paraves
prism.publicationName Science

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Title Dataset 1: Character List
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Title Dataset 1: TerminalTaxa
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Title Stratigraphic and Size Data for Datasets 1 and 2
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Title Dataset 1 in BEAST format
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