Data from: Pleistocene diversification in an ancient lineage: a role for glacial cycles in the evolutionary history of Dioon Lindl. (Zamiaceae).

Brian L. Dorsey, Timothy J Gregory, Chodon Sass & Chelsea D. Specht
Premise of the study: Recent estimates of crown ages for cycad genera (Late Miocene) challenge us to consider what processes have produced the extant diversity of this ancient group in such relatively little time. Pleistocene climate change has driven major shifts in species distributions in Mexico and may have led to speciation in the genus Dioon by forcing populations to migrate up in elevation thereby becoming separated by topography. Methods: We inferred orthologs from transcriptomes...
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