Late-surviving stem mammal links the lowermost Cretaceous of North America and Gondwana

@article{Huttenlocker2018LatesurvivingSM,
  title={Late-surviving stem mammal links the lowermost Cretaceous of North America and Gondwana},
  author={Adam K. Huttenlocker and David M. Grossnickle and James I. Kirkland and Julia A. Schultz and Zhe-Xi Luo},
  journal={Nature},
  year={2018},
  volume={558},
  pages={108-112}
}
Haramiyida was a successful clade of mammaliaforms, spanning the Late Triassic period to at least the Late Jurassic period, but their fossils are scant outside Eurasia and Cretaceous records are controversial1–4. Here we report, to our knowledge, the first cranium of a large haramiyidan from the basal Cretaceous of North America. This cranium possesses an amalgam of stem mammaliaform plesiomorphies and crown mammalian apomorphies. Moreover, it shows dental traits that are diagnostic of isolated… Expand
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