A living fossil tale of Pangaean biogeography

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A living fossil tale of Pangaean biogeography

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Title: A living fossil tale of Pangaean biogeography
Author: Murienne, J.; Daniels, S. R.; Buckley, T. R.; Mayer, G.; Giribet, Gonzalo

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Citation: Murienne, J., S. R. Daniels, T. R. Buckley, G. Mayer, and G. Giribet. 2013. “A Living Fossil Tale of Pangaean Biogeography.” Proceedings of the Royal Society B: Biological Sciences 281, no. 1775: 20132648–20132648. doi:10.1098/rspb.2013.2648.
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Abstract: The current distributions of widespread groups of terrestrial animals and plants are supposedly the result of a mixture of either vicariance owing to continental split or more recent trans-oceanic dispersal. For organisms exhibiting a vicariant biogeographic pattern—achieving their current distribution by riding on the plates of former supercontinents—this view is largely inspired by the belief that Pangaea lacked geographical or ecological barriers, or that extinctions and dispersal would have erased any biogeographic signal since the early Mesozoic. We here present a time-calibrated molecular phylogeny of Onychophora (velvet worms), an ancient and exclusively terrestrial panarthropod group distributed throughout former Pangaean landmasses. Our data not only demonstrate that trans-oceanic dispersal does not need be invoked to explain contemporary distributions, but also reveal that the early diversification of the group pre-dates the break-up of Pangaea, maintaining regionalization even in landmasses that have remained contiguous throughout the history of the group. These results corroborate a growing body of evidence from palaeontology, palaeogeography and palaeoclimatic modelling depicting ancient biogeographic regionalization over the continuous landmass of Pangaea.
Published Version: doi:10.1098/rspb.2013.2648
Citable link to this page: http://nrs.harvard.edu/urn-3:HUL.InstRepos:27755284
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