This period's standard section, which includes the Capitan reef and the Wolfcampian and Guadalupian layers, is the Glass Mountains of Texas.  
This period's standard section, which includes the Capitan reef and the Wolfcampian and Guadalupian layers, is the Glass Mountains of Texas.  Certain foraminifera known as fusulinids are index fossils for this period, which saw the appearances of order Coleoptera and of gymnosperms.  Named by Murchison for an ancient kingdom west of the Urals, it saw the formation of Pangaea.  Hypotheses ranging from glaciation on Gondwana to volcanic eruptions in Siberia have been advanced for the changes in the fossil record at its end.  FTP name this last period of the Paleozoic that ended in the largest known extinction event.
This period's standard section, which includes the Capitan reef and the Wolfcampian and Guadalupian layers, is the Glass Mountains of Texas.  
Permian