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Title

Decoupled ecomorphological evolution and diversification in Neogene-Quaternary horses

AuthorsCantalapiedra, Juan L. ; Prado, José Luis; Hernández Fernández, M. ; Alberdi, María Teresa
Issue Date10-Feb-2017
PublisherAmerican Association for the Advancement of Science
CitationScience 355(6325): 627-630 (2017)
AbstractEvolutionary theory has long proposed a connection between trait evolution and diversification rates. In this work, we used phylogenetic methods to evaluate the relationship of lineage-specific speciation rates and the mode of evolution of body size and tooth morphology in the Neogene and Quaternary radiation of horses (7 living and 131 extinct species). We show that diversification pulses are a recurrent feature of equid evolution but that these pulses are not correlated with rapid bursts in phenotypic evolution. Instead, rapid cladogenesis seems repeatedly associated with extrinsic factors that relaxed diversity bounds, such as increasing productivity and geographic dispersals into the Old World. This evidence suggests that diversity dynamics in Equinae were controlled mainly by ecological limits under diversity dependence rather than rapid ecomorphological differentiation.
Publisher version (URL)https://doi.org/10.1126/science.aag1772
URIhttp://hdl.handle.net/10261/185631
DOI10.1126/science.aag1772
ISSN0036-8075
E-ISSN1095-9203
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