The Paibian is the lowest stage of

Furongian The Furongian is the fourth and final epoch and series of the Cambrian. It lasted from to million years ago. It succeeds the Miaolingian series of the Cambrian and precedes the Lower Ordovician Tremadocian Stage. It is subdivided into three ...

series of the

Cambrian The Cambrian Period ( ; sometimes symbolized C with bar, Ꞓ) was the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran Period 538.8 million ...

. It follows the

Guzhangian The Guzhangian is an uppermost stage of the Miaolingian Series of the Cambrian. It follows the Drumian Stage and precedes the Paibian Stage of the Furongian Series. The base is defined as the first appearance of the trilobite '' Lejopyge laevig ...

( 3rd series of the Cambrian) and is succeeded by the

Jiangshanian The Jiangshanian is the middle stage of the Furongian series. It follows the Paibian Stage and is succeeded by the still unnamed Stage 10 of the Cambrian. The base is defined as the first appearance of the trilobite '' Agnostotes orientalis'' wh ...

Stage. The base is defined as the first appearance of the trilobite ''

Glyptagnostus reticulatus ''Glyptagnostus reticulatus'' is a species of agnostid trilobite belonging to the genus '' Glyptagnostus''. It existed during the Paibian Age ( million years ago) of the Cambrian. It has a cosmopolitan distribution and is an important index fos ...

'' around million years ago. The top, or the base of the

is defined as the first appearance of the trilobite ''

Agnostotes orientalis ''Agnostotes orientalis'' is a species of agnostid trilobite belonging to the genus '' Agnostotes''. It existed during the Jiangshanian Age ( million years ago) of the Cambrian. It is an important index fossil in biostratigraphy. Description ' ...

'' around million years ago. The name is derived from

Paibi Paibi (), a village in Paibi Township (), Huayuan County, Xiangxi Tujia and Miao Autonomous Prefecture Hunan, China, is the location of the Global Boundary Stratotype Section and Point (GSSP) which marks the boundary between the third and Furongia ...

, a village in

Hunan Hunan (, ; ) is a landlocked province of the People's Republic of China, part of the South Central China region. Located in the middle reaches of the Yangtze watershed, it borders the province-level divisions of Hubei to the north, Jiangxi to ...

, China. The GSSP is defined in the "Paibi section" (

Wuling Mountains The Wuling Mountains () are a mountain range located in Central China, running from Chongqing Municipality and East Guizhou to West Hunan. They are home to many ethnic groups, including as the Tujia, Han, Miao, Dong, and Bai. Wulingyuan T ...

Huayuan County Huayuan County () is a county of Hunan Province, China, it is under the administration of Xiangxi Autonomous Prefecture. Located on the western margin of the province and the south western Xiangxi, it is immediately adjacent to the borders of Gu ...

), an outcrop of the

Huaqiao Formation Huaqiao may refer to: *Overseas Chinese (华侨), or Huaqiao in pinyin *Huaqiao University (华侨大学), in Quanzhou, Fujian *Huaqiao railway station (花桥站), station of the Shanghai-Nanjing Intercity High-Speed Railway in Shanghai *Huaqiao s ...

(花桥组). The base is the first occurrence of ''

'' which is 396 m above the base of the

at the type locality ().

References

Cambrian geochronology Geological ages {{Geology-stub