The Late Miocene Radiation of Modern Felidae: A Genetic Assessment
Modern felid species descend from relatively recent (<11 million years ago) divergence and speciation events that produced successful predatory carnivores worldwide but that have confounded taxonomic classifications. A highly resolved molecular phylogeny with divergence dates for all living cat species, derived from autosomal, X-linked, Y-linked, and mitochondrial gene segments (22,789 base pairs) and 16 fossil calibrations define eight principal lineages produced through at least 10 intercontinental migrations facilitated by sea-level fluctuations. A ghost lineage analysis indicates that available felid fossils underestimate (i.e., unrepresented basal branch length) first occurrence by an average of 76%, revealing a low representation of felid lineages in paleontological remains. The phylogenetic performance of distinct gene classes showed that Y-chromosome segments are appreciably more informative than mitochondrial DNA, X-linked, or autosomal genes in resolving the rapid Felidae species radiation.
Johnson, Warren E.; Eduardo Eizirik; Jill Pecon-Slattery; William J. Murphy; Agostinho Antunes; Emma C. Teeling; and Stephen J. O'Brien. 2006. "The Late Miocene Radiation of Modern Felidae: A Genetic Assessment." Science 311, (5757): 73-77. http://nsuworks.nova.edu/cnso_bio_facarticles/554