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Global Permian brachiopod biostratigraphy: an overview

By
Shu-Zhong Shen
Shu-Zhong Shen
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, 39 East Beijing Road, Nanjing, Jiangsu, 210008, China szshen@nigpas.ac.cn
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Published:
January 01, 2018

Abstract:

Establishing a Permian brachiopod biochronological scheme for global correlation is difficult because of strong provincialism during the Permian. In this paper, a brief overview of brachiopod successions in five major palaeobiogeographical realms/zones is provided. For Gondwanaland and peri-Gondwanan regions including Cimmerian blocks, Bandoproductus and Punctocyrtella (or Cyrtella) are characteristic of the lower Cisuralian, as is Cimmeriella for the middle Cisuralian. As the Cimmerian blocks continued drifting north during the late Kungurian, accompanied by climate amelioration, contemporaneous brachiopods inhabiting these blocks showed a distinct shift from cold-water to mixed or warm-water affinities. However, coeval brachiopods in the Northern Transitional Zone (NTZ) are characterized by warm-water faunas and are associated with fusulinids in the lower Cisuralian. The Guadalupian brachiopods of the NTZ were clearly mixed between the Boreal and palaeoequatorial affinities. The end-Guadalupian is marked by the disappearance of a few characteristic genera, such as Vediproductus, Neoplicatifera and Urushtenoidea, in the Palaeotethyan region. The onset of the end-Permian mass extinction in the latest Changhsingian is clearly exhibited by the occurrence of the dwarfed and thin-shelled brachiopods commonly containing Paracrurithyris.

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Geological Society, London, Special Publications

The Permian Timescale

S.G. Lucas
S.G. Lucas
New Mexico Museum of Natural History, USA
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S. Z. Shen
S. Z. Shen
Nanjing Institute of Geology and Palaeontology, China
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Geological Society of London
Volume
450
ISBN electronic:
9781786203311
Publication date:
January 01, 2018

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