Fortunian

Delegates from the Ichnia 2012 conference inspect the Global Boundary Stratotype Section and Point (GSSP) for the Ediacaran-Cambrian boundary at Fortune Head Ecological Reserve, Newfoundland, Canada. The boundary is defined on the appearance of the complex, vertical trace fossil Treptichnus (formerly Phycodes) pedum.

Key events in the Cambrian

view • discuss •

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-540 —

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-530 —

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-520 —

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-510 —

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-500 —

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-490 —

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Ediacaran

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Ordovician

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Fortunian

"Stage 2"

"Stage 3"

"Stage 4"

"Stage 5"

Drumian

Guzhangian

Paibian

Jiangshanian

"Stage 10"

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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 Fortunian stage marks the beginning of the Phanerozoic eon, the Paleozoic era, and the Cambrian period. It is the first of the two stages of the Terreneuvian series. Its base is defined as the first appearance of the trace fossil Treptichnus pedum 541.0 ± 1.0 million years ago. The top of the Fortunian which is the base of the Stage 2 of the Cambrian has not been formally defined yet, but will correspond to the appearance of an Archeocyatha species or "Small shelly fossils" approximately ~529 million years ago.

单词	Fortunian
释义	Fortunian 英语百科 Fortunian Key events in the Cambrian view • discuss • -550 — – -540 — – -530 — – -520 — – -510 — – -500 — – -490 — – N e o p r o t e r o z o i c P a l e o z o i c Ediacaran C a m b r i a n Ordovician T e r r e n e u v i a n S e r i e s 2 S e r i e s 3 F u r o n g i a n Fortunian "Stage 2" "Stage 3" "Stage 4" "Stage 5" Drumian Guzhangian Paibian Jiangshanian "Stage 10" * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * Baykonur glaciation Baykonur glaciation * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ← Orsten Fauna ← Burgess Shale ← Kaili biota ← Archaeocyatha extinction ← Emu Bay Shale ← Sirius Passet biota ← Chengjiang biota ← First Trilobites ← SSF diversification, first brachiopods & archaeocyatha ← First halkieriids, mollusсs, hyoliths SSF ← Treptichnus pedum trace Large negative peak δ 13C_carb excursion ← First Cloudina & Namacalathus mineral tubular fossils Stratigraphic scale of the ICS subdivisions and Precambrian/Cambrian boundary. The Fortunian stage marks the beginning of the Phanerozoic eon, the Paleozoic era, and the Cambrian period. It is the first of the two stages of the Terreneuvian series. Its base is defined as the first appearance of the trace fossil Treptichnus pedum 541.0 ± 1.0 million years ago. The top of the Fortunian which is the base of the Stage 2 of the Cambrian has not been formally defined yet, but will correspond to the appearance of an Archeocyatha species or "Small shelly fossils" approximately ~529 million years ago.
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