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Bocxlaer, I.V. and Roelants, K. and Biju, S.D. and Nagaraju, J. and Bossuyt, F. (2006) Late Cretaceous Vicariance in Gondwanan Amphibians. PLoS ONE, 1 (1). e74. ISSN 1932-6203

PLoS One 1 e74.pdf

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Overseas dispersals are often invoked when Southern Hemisphere terrestrial and freshwater organism phylogenies do not fit the sequence or timing of Gondwana fragmentation. We used dispersal-vicariance analyses and molecular timetrees to show that two species-rich frog groups, Microhylidae and Natatanura, display congruent patterns of spatial and temporal diversification among Gondwanan plates in the Late Cretaceous, long after the presumed major tectonic break-up events. Because amphibians are notoriously salt-intolerant, these analogies are best explained by simultaneous vicariance, rather than by oceanic dispersal. Hence our results imply Late Cretaceous connections between most adjacent Gondwanan landmasses, an essential concept for biogeographic and palaeomap reconstructions.

Item Type: Article
Depositing User: Dr P Divakar
Date Deposited: 13 Nov 2015 09:30
Last Modified: 13 Nov 2015 09:30
URI: http://cdfd.sciencecentral.in/id/eprint/637

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