New Basal Synapsid Supports Laurasian Origin for Therapsids

@inproceedings{Liu2009NewBS,
  title={New Basal Synapsid Supports Laurasian Origin for Therapsids},
  author={J. Liu and B. Rubidge and Jin-ling Li},
  year={2009}
}
The distant evolutionary ancestry of mammals is documented by a rich therapsid fossil record. While sphenacodontid synapsids are considered the sister-group of therapsids, the place of origin of therapsids is an enigma, largely because of a long standing morphological and temporal gap (Olson's Gap) in their fossil record. We describe a new large predatory synapsid, Raranimus dashankouensis gen. et sp. nov., from the Middle Permian of Dashankou in China which has a unique combination of… Expand
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