An examination of the impact of Olson’s extinction on tetrapods from Texas

  title={An examination of the impact of Olson’s extinction on tetrapods from Texas},
  author={Neil Brocklehurst},
It has been suggested that a transition between a pelycosaurian-grade synapsid dominated fauna of the Cisuralian (early Permian) and the therapsid dominated fauna of the Guadalupian (middle Permian) was accompanied by, and possibly driven by, a mass extinction dubbed Olson’s Extinction. However, this interpretation of the record has recently been criticised as being a result of inappropriate time-binning strategies: calculating species richness within international stages or substages combines… 

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