Qiongzhusian

Cambrian graphical timeline

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N
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P
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o
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c

Ediacaran

C
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m
b
r
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a
n

Ordovician

T
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r
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S
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2

M
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F
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Fortunian

"Stage 2"

"Stage 3"

"Stage 4"

"Stage 10"

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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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Baykonurian glaciation

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Dresbachian extinction

Major Glacial period

Subdivision of the Cambrian according to the ICS, as of 2024.
Vertical axis scale: Millions of years ago

The Qiongzhusian age is a regional subdivision (in China) of Cambrian Series 2 Stage 3; it is correlated with late Atdabanian rocks elsewhere and overlain by the Canglangpuian age.