Paibian

Key events in the Cambrian
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Paibian
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Baykonurian glaciation
Baykonurian glaciation
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Orsten Fauna
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Burgess Shale
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Kaili biota
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Archaeocyatha extinction
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Emu Bay Shale
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Treptichnus pedum trace
Large negative peak δ 13Ccarb excursion
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First Cloudina & Namacalathus mineral tubular fossils
Stratigraphic scale of the ICS subdivisions and Precambrian/Cambrian boundary.

Coordinates: 28°23′22″N 109°31′33″E / 28.3895°N 109.5257°E / 28.3895; 109.5257 The Paibian is the lowest stage of Furongian series of the Cambrian. It follows the Guzhangian (3rd series of the Cambrian) and is succeeded by the Jiangshanian stage. The base is defined as the first appearance of the trilobite Glyptagnostus reticulatus around 497 million years ago. The top, or the base of the Jiangshanian is defined as the first appearance of the trilobite Agnostotes orientalis around 494 million years ago.

The name is derived from Paibi, a village in Hunan, China. The GSSP is defined in the "Paibi section" (Wuling Mountains, Huayuan County), an outcrop of the Huaqiao Formation. The base is the first occurrence of Glyptagnostus reticulatus which is 396 m above the base of the Huaqiao Formation at the type locality (28°23′22″N 109°31′33″E / 28.3895°N 109.5257°E / 28.3895; 109.5257).[1]

References

  1. ↑ "GSSP for the Paibian". Retrieved 12 November 2012.
Paleozoic Era
Cambrian Ordovician Silurian Devonian Carboniferous Permian


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