Jiangshanian

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Coordinates: 28°48′57″N 118°36′54″E / 28.815967°N 118.614933°E / 28.815967; 118.614933

Key events in the Cambrian

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-540 —

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Ediacaran

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Ordovician

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Fortunian

"Stage 2"

"Stage 3"

"Stage 4"

"Stage 5"

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Baykonur
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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Sirius Passet biota

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Chengjiang biota

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First Trilobites

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SSF diversification, first brachiopods & archaeocyatha

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First halkieriids, mollusсs, hyoliths SSF

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Treptichnus pedum trace
Large negative peak δ 13C_carb excursion

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First Cloudina & Namacalathus mineral tubular fossils

Stratigraphic scale of the ICS subdivisions and Precambrian/Cambrian boundary.

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 which was is estimated to be ~494 million years ago. The Jiangshanian last until approximately ~489.5 million years ago.^[1]

The Cambrian stage was named after Jiangshan, a town in the Zhejiang province of China.^[2]

The GSSP of the Jiangshanian is the "Duibian B Section" (28°48′57″N 118°36′54″E / 28.815967°N 118.614933°E / 28.815967; 118.614933), west of the village of Duibian, and 10 km north of Jiangshan. The outcrop belongs to the Huayansi Formation.^[2]

References

↑ "International Chronostratigraphic Chart". ICS. Retrieved 12 November 2012.
↑ 2.0 2.1 "GSSP for Jiangshanian". Retrieved 12 November 2012.

Preceded by Proterozoic Eon	Phanerozoic Eon
	Paleozoic Era						Mesozoic Era			Cenozoic Era
	Cambrian	Ordovician	Silurian	Devonian	Carboniferous	Permian	Triassic	Jurassic	Cretaceous	Paleogene	Neogene	Quaternary

Geologic history of Earth

Precambrian supereon (4.6 Gya – 542 Mya)

In left column are eons; right column: bold are eras; not bold are periods:

Hadean
(4.6 – 3.8 Gya)

Paleohadean (4.6 – 4.3 Gya)

Mesohadean (4.3 – 4.1 Gya)

Neohadean (4.1 – 3.8 Gya)

Archean
(3.8 – 2.5 Gya)

Eoarchean (3.8 – 3.6 Gya)

Paleoarchean (3.6 – 3.2 Gya)

Mesoarchean (3.2 – 2.8 Gya)

Neoarchean (2.8 – 2.5 Gya)

Proterozoic
(2.5 Gya – 542 Mya)

Paleoproterozoic (2.5 – 1.6 Gya): Siderian (2.5 – 2.3 Gya) Rhyacian (2.3 – 2.05 Gya) Orosirian (2.05 – 1.8 Gya) Statherian (1.8 – 1.6 Gya)

Mesoproterozoic (1.6 – 1 Gya): Calymmian (1.6 – 1.4 Gya) Ectasian (1.4 – 1.2 Gya) Stenian (1.2 – 1 Gya)

Neoproterozoic (1 Gya – 541.0 Mya): Tonian (1 Gya – 850 Mya) Cryogenian (850 – 635 Mya) Ediacaran (635 – 542 Mya)

Mya = millions years ago. Gya = billions years ago.

Phanerozoic eon (542 Mya – Today)

In horizontal bars are eras; in left column are periods; right column: bold are epochs; not bold not italic are ages; italic are chrons:

Paleozoic (542 – 250 Mya)

Cambrian
(542 – 485 Mya)

Terreneuvian (542 – 521 Mya): Fortunian (542 – 529 Mya) Age 2* (529 – 521 Mya)

*Epoch 2 (521 – 509 Mya)*: Age 3 (521 – 514 Mya) Age 4* (514 – 509 Mya)

*Epoch 3 (509 – 497 Mya)*: Age 5 (509 – 505 Mya) Drumian (505 – 501 Mya) Guzhangian (501 – 497 Mya)

Furongian (497 – 485 Mya): Paibian (497 – 494 Mya) Jiangshanian (494 – 490 Mya) Age 10* (490 – 485 Mya)

Ordovician
(485 – 443 Mya)

Early Ordovician (485 – 470 Mya): Tremadocian (485 – 478 Mya) Floian (478 – 470 Mya)

Middle Ordovician (470.0 – 458.4 Mya): Dapingian (470 – 467 Mya) Darriwilian (467 – 458 Mya)

Late Ordovician (458 – 443 Mya): Sandbian (458 – 453 Mya) Katian (453 – 445 Mya) Hirnantian (445 – 443 Mya)

Silurian
(443 – 419 Mya)

Llandovery (443 – 433 Mya): Rhuddanian (443 – 441 Mya) Aeronian (441 – 439 Mya) Telychian (439 – 434 Mya)

Wenlock (434 – 427 Mya): Sheinwoodian (434 – 431 Mya) Homerian (431 – 427 Mya)

Ludlow (427 – 423 Mya): Gorstian (427 – 426 Mya) Ludfordian (426 – 423 Mya)

Pridoli (423 – 419 Mya)

Devonian
(419 – 359 Mya)

Early Devonian (419 – 393 Mya): Lochkovian (419 – 411 Mya) Pragian (411 – 408 Mya) Emsian (408 – 393 Mya)

Middle Devonian (393.3 – 382.7 Mya): Eifelian (393 – 388 Mya) Givetian (388 – 383 Mya)

Late Devonian (382.7 – 358.9 Mya): Frasnian (383 – 372 Mya) Famennian (372 – 360 Mya)

Carboniferous
(360 – 300 Mya)

Mississippian (360 – 323 Mya): Tournaisian (360 – 347 Mya) Viséan (347 – 331 Mya) Serpukhovian (331 – 323 Mya)

Pennsylvanian (323 – 300 Mya): Bashkirian (323 – 315 Mya) Moscovian (315 – 307 Mya) Kasimovian (307 – 304 Mya) Gzhelian (304 – 300 Mya)

Permian
(300 – 250 Mya)

Cisuralian (300 – 272 Mya): Asselian (300 – 295 Mya) Sakmarian (295 – 290 Mya) Artinskian (290 – 284 Mya) Kungurian (284 – 272 Mya)

Guadalupian (272 – 260 Mya): Roadian (272 – 269 Mya) Wordian (269 – 265 Mya) Capitanian (265 – 260 Mya)

Lopingian (260 – 250 Mya): Wuchiapingian (260 – 254 Mya) Changhsingian (254 – 250 Mya)

Kasimovian and Gzhelian comprise Late Pennsylvanian (307.0 – 298.9 Mya) subepoch.

Mesozoic (250 – 65 Mya)

Triassic
(250 – 200 Mya)

Early Triassic (250.17 – 247 Mya): Induan (250 – 248 Mya) Olenekian (248 – 247 Mya)

Middle Triassic (247 – 235 Mya): Anisian (247 – 242 Mya) Ladinian (242 – 235 Mya)

Late Triassic (235 – 200 Mya): Carnian (235 – 228 Mya) Norian (228 – 209 Mya) Rhaetian (209 – 200 Mya)

Jurassic
(200 – 144 Mya)

Early Jurassic (200 – 174 Mya): Hettangian (200 – 199 Mya) Sinemurian (199 – 191 Mya) Pliensbachian (191 – 183 Mya) Toarcian (183 – 174 Mya)

Middle Jurassic (174 – 164 Mya): Aalenian (174 – 170 Mya) Bajocian (170 – 168 Mya) Bathonian (168 – 166 Mya) Callovian (166 – 164 Mya)

Late Jurassic (164 – 145 Mya): Oxfordian (164 – 157 Mya) Kimmeridgian (157 – 152 Mya) Tithonian (152 – 145 Mya)

Cretaceous
(145 – 65 Mya)

Early Cretaceous (144 – 100 Mya): Berriasian (144 – 140 Mya) Valanginian (140 – 133 Mya) Hauterivian (133 – 129 Mya) Barremian (129 – 125 Mya) Aptian (125 – 113 Mya) Albian (113 – 100 Mya)

Late Cretaceous (100 – 65 Mya): Cenomanian (100 – 94 Mya) Turonian (94 – 90 Mya) Coniacian (90 – 86 Mya) Santonian (86 – 84 Mya) Campanian (84 – 72 Mya) Maastrichtian (72 – 65 Mya)

Cenozoic (65 Mya – Today)

Paleogene
(65 – 23 Mya)

Paleocene (65 – 56 Mya): Danian (65 – 62 Mya) Selandian (62 – 59 Mya) Thanetian (59 – 56 Mya)

Eocene (56 – 34 Mya): Ypresian (56 – 48 Mya) Lutetian (48 – 41 Mya) Bartonian (41 – 38 Mya) Priabonian (38 – 34 Mya)

Oligocene (34 – 23 Mya): Rupelian (34 – 28 Mya) Chattian (28 – 23 Mya)

Neogene
(23 – 1 Mya)

Miocene (23 – 5 Mya): Aquitanian (23 – 20 Mya) Burdigalian (20 – 16 Mya) Langhian (16 – 14 Mya) Serravallian (14 – 12 Mya) Tortonian (12 – 7 Mya) Messinian (7 – 5 Mya)

Pliocene (5 – 1 Mya): Piacenzian (5 – 4 Mya) Zanclean (4 – 1 Mya)

Quaternary
(1 Mya – Today)

Pleistocene (1 Mya – 12 kya): Gelasian (1 Mya – 870 kya) Calabrian (870 – 780 kya) Middle Pleistocene (Ionian) (780 – 126 kya) Late Pleistocene (Tarantian) (126 – 12 kya): Oldest Dryas (18 – 16 kya)* Bølling (16 – 15 kya)* Older Dryas (15 – 14 kya)* Allerød (14 – 13 kya)* Younger Dryas (13 – 12 kya)*

Holocene (12 kya – Today): Preboreal (12 – 9 kya)* Boreal (9 – 8 kya)* Atlantic (8 – 5 kya)* Subboreal (5 – 2.5 kya)* Subatlantic (2.5 kya – Today)*

Paleogene, Neogene and early Pleistocene comprise former Tertiary* (65 – 1 Mya) period. Gelasian and Calabrian comprise Early Pleistocene (1 Mya – 780 kya) subepoch.

kya = thousands years ago. Mya = millions years ago. * Not officially recognized by the I.C.S.

Source: International Chronostratigraphic Chart (January 2013). International Commission on Stratigraphy. Retrieved 27 March 2013. Divisions of Geologic Time—Major Chronostratigraphic and Geochronologic Units USGS Retrieved 10 March 2013.

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