Ancient DNA Clarifies the Evolutionary History of American Late Pleistocene Equids

@article{Orlando2008AncientDC,
  title={Ancient DNA Clarifies the Evolutionary History of American Late Pleistocene Equids},
  author={Ludovic Orlando and Dean Male and Mar{\'i}a Teresa Alberdi and Jos{\'e} L Prado and Alfredo Prieto and Alan Cooper and Catherine H{\"a}nni},
  journal={Journal of Molecular Evolution},
  year={2008},
  volume={66},
  pages={533-538}
}
Hippidions are past members of the equid lineage which appeared in the South American fossil record around 2.5 Ma but then became extinct during the great late Pleistocene megafaunal extinction. According to fossil records and numerous dental, cranial, and postcranial characters, Hippidion and Equus lineages were expected to cluster in two distinct phylogenetic groups that diverged at least 10 MY, long before the emergence of the first Equus. However, the first DNA sequence information… 

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