The skull of a relative of the stem-group bird Mononykus

@article{Chiappe1998TheSO,
  title={The skull of a relative of the stem-group bird Mononykus},
  author={Luis Mar{\'i}a Chiappe and Mark A. Norell and James M. Clark},
  journal={Nature},
  year={1998},
  volume={392},
  pages={275-278}
}
In joint expeditions, researchers from the American Museum of Natural History and the Mongolian Academy of Sciences have recovered over 20 alvarezsaurid (Theropoda: Aves) specimens in the Late Cretaceous beds of Mongolia's Gobi Desert. Here we describe a new taxon that is closely related to Mononykus,. This new taxon is represented by two exquisitely preserved skulls — the first known for Alvarezsauridae — details of which support the theory that the group is related to birds,. This theory was… 
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