Evolutionary History of Saber-Toothed Cats Based on Ancient Mitogenomics

Research output: Contribution to journalArticle

Authors

  • Johanna L.A. Paijmans
  • Ross Barnett
  • M. Thomas P. Gilbert
  • Jelle W.F. Reumer
  • John de Vos
  • Grant Zazula
  • Doris Nagel
  • Gennady F. Baryshnikov
  • Jennifer A. Leonard
  • Nadin Rohland
  • Michael V. Westbury
  • Axel Barlow
  • Michael Hofreiter

Colleges, School and Institutes

External organisations

  • University of Potsdam
  • University of Copenhagen
  • Curtin University
  • Norwegian University of Science and Technology
  • Utrecht University
  • Natural History Museum Rotterdam
  • Geological Museum Hofland
  • Naturalis Biodiversity Center
  • Government of Yukon
  • University of Vienna
  • Russian Academy of Sciences
  • CSIC- Estación Biológica de Doñana EBD
  • Harvard Medical School

Abstract

Saber-toothed cats (Machairodontinae) are among the most widely recognized representatives of the now largely extinct Pleistocene megafauna. However, many aspects of their ecology, evolution, and extinction remain uncertain. Although ancient-DNA studies have led to huge advances in our knowledge of these aspects of many other megafauna species (e.g., mammoths and cave bears), relatively few ancient-DNA studies have focused on saber-toothed cats [1–3], and they have been restricted to short fragments of mitochondrial DNA. Here we investigate the evolutionary history of two lineages of saber-toothed cats (Smilodon and Homotherium) in relation to living carnivores and find that the Machairodontinae form a well-supported clade that is distinct from all living felids. We present partial mitochondrial genomes from one S. populator sample and three Homotherium sp. samples, including the only Late Pleistocene Homotherium sample from Eurasia [4]. We confirm the identification of the unique Late Pleistocene European fossil through ancient-DNA analyses, thus strengthening the evidence that Homotherium occurred in Europe over 200,000 years later than previously believed. This in turn forces a re-evaluation of its demography and extinction dynamics. Within the Machairodontinae, we find a deep divergence between Smilodon and Homotherium (∼18 million years) but limited diversity between the American and European Homotherium specimens. The genetic data support the hypothesis that all Late Pleistocene (or post-Villafrancian) Homotherium should be considered a single species, H. latidens, which was previously proposed based on morphological data [5, 6]. Paijmans et al. present ancient DNA from some of the most recognized extinct Pleistocene megafauna: the saber-toothed cats. The results elucidate the evolutionary history of these iconic carnivores and provide genetic evidence that saber-toothed cats existed in Europe over 200,000 years later than previously believed.

Bibliographic note

Published under an 'Elsevier user licence' - https://www.elsevier.com/about/policies/open-access-licenses/elsevier-user-license

Details

Original languageEnglish
Pages (from-to)3330-3336.e5
JournalCurrent Biology
Volume27
Issue number21
Early online date19 Oct 2017
Publication statusPublished - 6 Nov 2017

Keywords

  • ancient DNA, Homotherium, mitochondrial DNA, mitogenomes, saber-toothed cat, scimitar-toothed cat, Smilodon