Research overview: origin and diversification of the Panthera lineage

The Panthera lineage contains the roaring cats and their relatives and represents the earliest branch of the modern felid radiation. This overview surveys genetic and fossil evidence for an Asian origin of the genus, the molecular timing of splits among the big cats, and the role of Pleistocene climate cycles in shaping their distributions. It discusses the genetic basis of the roar via hyoid and laryngeal specialization, the repeated colonization of new continents, and why resolving the Panthera bush has required genome-scale data. The survey frames how big-cat phylogeny underpins conservation units and hybridization studies. It also considers how repeated Pleistocene range shifts repeatedly brought big-cat populations into contact and isolation, leaving the genomic mosaic of shared and divergent ancestry that researchers untangle today.