First gondwanatherian mammal from Antarctica

@article{Goin2006FirstGM,
  title={First gondwanatherian mammal from Antarctica},
  author={Francisco Javier Goin and Mar Reguero and Rosendo Pascual and Wighart von Koenigswald and Michael O. Woodburne and Judd A. Case and Sergio A. Marenssi and Carolina Vieytes and Sergio Fabi{\'a}n Vizcaino},
  journal={Geological Society, London, Special Publications},
  year={2006},
  volume={258},
  pages={135 - 144}
}
Abstract Gondwanatherians are an enigmatic group of extinct non-therian mammals apparently restricted to some of the western Gondwanan continents (Late Cretaceous-early Palaeocene of South America, and Late Cretaceous of Madagascar and India). They developed rodent-like incisors and the earliest known hypsodont cheek-teeth among mammals. Recently, a small rodent-like dentary fragment was recovered from middle Eocene beds on the Antarctic Peninsula, preserving part of the incisor; both the… 
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TLDR
The new taxon adds evidence regarding the extensive radiation of the Gondwanatheria throughout the Southern Hemisphere, persistence of several lineages well after the Cretaceous/Paleogene boundary, and early evolution of hypsodont types among South American herbivorous mammals.
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