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Early Pleistocene origin and extensive intra-species diversity of the extinct cave lion

Stanton, David W. G., Alberti, Federica, Plotnikov, Valery, Androsov, Semyon, Grigoriev, Semyon, Fedorov, Sergey, Kosintsev, Pavel, Nagel, Doris, Vartanyan, Sergey, Barnes, Ian, Barnett, Ross, Ersmark, Erik, Döppes, Doris, Germonpré, Mietje, Hofreiter, Michael, Rosendahl, Wilfried, Skoglund, Pontus and Dalén, Love 2020. Early Pleistocene origin and extensive intra-species diversity of the extinct cave lion. Scientific Reports 10 , 12621. 10.1038/s41598-020-69474-1

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The cave lion is an extinct felid that was widespread across the Holarctic throughout the Late Pleistocene. Its closest extant relative is the lion (Panthera leo), but the timing of the divergence between these two taxa, as well as their taxonomic ranking are contentious. In this study we analyse 31 mitochondrial genome sequences from cave lion individuals that, through a combination of 14C and genetic tip dating, are estimated to be from dates extending well into the mid-Pleistocene. We identified two deeply diverged and well-supported reciprocally monophyletic mitogenome clades in the cave lion, and an additional third distinct lineage represented by a single individual. One of these clades was restricted to Beringia while the other was prevalent across western Eurasia. These observed clade distributions are in line with previous observations that Beringian and European cave lions were morphologically distinct. The divergence dates for these lineages are estimated to be far older than those between extant lions subspecies. By combining our radiocarbon tip-dates with a split time prior that takes into account the most up-to-date fossil stem calibrations, we estimated the mitochondrial DNA divergence between cave lions and lions to be 1.85 Million ya (95% 0.52– 2.91 Mya). Taken together, these results support previous hypotheses that cave lions existed as at least two subspecies during the Pleistocene, and that lions and cave lions were distinct species.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Biosciences
Publisher: Nature Research
ISSN: 2045-2322
Date of First Compliant Deposit: 6 November 2023
Date of Acceptance: 8 July 2020
Last Modified: 06 Nov 2023 16:45

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