Ancient proteins resolve the evolutionary history of Darwin’s South American ungulates

@article{Welker2015AncientPR,
  title={Ancient proteins resolve the evolutionary history of Darwin’s South American ungulates},
  author={Frido Welker and Matthew James Collins and Jessica A. Thomas and Marc Wadsley and Selina Brace and Enrico Cappellini and Samuel T. Turvey and Mar Reguero and Javier N. Gelfo and Alejandro Kramarz and Joachim Burger and Jane E. Thomas-Oates and David A. Ashford and Peter D. Ashton and Keri Rowsell and Duncan Macnair Porter and Benedikt M. Kessler and Roman Fischer and Carsten Baessmann and Stephanie Kaspar and Jesper Velgaard Olsen and Patrick J. Kiley and James A. Elliott and Christian Dahl Kelstrup and Victoria E. Mullin and Michael Hofreiter and Eske Willerslev and Jean-Jacques Hublin and Ludovic Orlando and Ian Barnes and Ross D.E. Macphee},
  journal={Nature},
  year={2015},
  volume={522},
  pages={81-84}
}
No large group of recently extinct placental mammals remains as evolutionarily cryptic as the approximately 280 genera grouped as ‘South American native ungulates’. To Charles Darwin, who first collected their remains, they included perhaps the ‘strangest animal[s] ever discovered’. Today, much like 180 years ago, it is no clearer whether they had one origin or several, arose before or after the Cretaceous/Palaeogene transition 66.2 million years ago, or are more likely to belong with the… Expand
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