File:Journal.pone.0062047.pdf
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English: Geophysical evidence strongly supports the complete isolation of India and Madagascar (Indo-Madagascar) by ∼100 million years ago, though sparse terrestrial fossil records from these regions prior to ∼70 million years ago have limited insights into their biogeographic history during the Cretaceous. A new theropod dinosaur, Dahalokely tokana, from Turonian-aged (∼90 million years old) strata of northernmost Madagascar is represented by a partial axial column. Autapomorphies include a prominently convex prezygoepipophyseal lamina on cervical vertebrae and a divided infraprezygapophyseal fossa through the mid-dorsal region, among others. Phylogenetic analysis definitively recovers the species as an abelisauroid theropod and weakly as a noasaurid. Dahalokely is the only known dinosaur from the interval during which Indo-Madagascar likely existed as a distinct landmass, but more complete material is needed to evaluate whether or not it is more closely related to later abelisauroids of Indo-Madagascar or those known elsewhere in Gondwana. |
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https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0062047 https://doi.org/10.1371/journal.pone.0062047 |
Author | Andrew A. Farke, Joseph J. W. Sertich |
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current | 19:14, 8 July 2020 | ![]() | 1,275 × 1,645, 18 pages (29.97 MB) | Pamputt (talk | contribs) | Uploaded a work by Andrew A. Farke, Joseph J. W. Sertich from https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0062047 https://doi.org/10.1371/journal.pone.0062047 with UploadWizard |
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Short title | pone.0062047 1..18 |
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