page_title: Paleobiota of the Yixian Formation
section_title: Mammals
hierarchical_section_title: Paleobiota of the Yixian Formation / Mammals
caption_attribution_description: Yanoconodon allini, a primitive mammal from the Early Cretaceous of China, pencil drawing.Ref: Luo, Z., Chen, P., Li, G., &amp; Chen, M. (2007-03). "A new eutriconodont mammal and evolutionary development in early mammals". Nature 446: 288-293. DOI:doi:10.1038/nature05627.
context_page_description: The Yixian Formation is a geological formation in Jinzhou, Liaoning, People's Republic of China, that spans about 5 million years during the early Cretaceous period. It is known for its fossils, listed below.
  The Yixian Formation is divided into the following subunits:
  Jingangshan Bed
  Dawangzhangzi Bed
  Jianshangou Bed
  Lujiatun Bed
  Basalt base
context_section_description: The mammals listed below were compiled in a survey by Meng and colleagues in 2006, unless otherwise noted.
caption: Yanoconodon
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