A Late Jurassic Digging Mammal and Early Mammalian Diversification

@article{Luo2005ALJ,
  title={A Late Jurassic Digging Mammal and Early Mammalian Diversification},
  author={Zhe‐Xi Luo and John R. Wible},
  journal={Science},
  year={2005},
  volume={308},
  pages={103 - 107}
}
A fossil mammal from the Late Jurassic Morrison Formation, Colorado, has highly specialized teeth similar to those of xenarthran and tubulidentate placental mammals and different from the generalized insectivorous or omnivorous dentitions of other Jurassic mammals. It has many forelimb features specialized for digging, and its lumbar vertebrae show xenarthrous articulations. Parsimony analysis suggests that this fossil represents a separate basal mammalian lineage with some dental and vertebral… 

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