End-Ediacaran extinction
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The End-Ediacaran extinction, also called the Kotlin Crisis, is a mass extinction believed to have occurred near the end of the Ediacaran period, the final period of the Proterozoic eon. Evidence sugg
Most of the Ediacaran organisms featured in this image went extinct because of the extinction event. Note: this is an outdated reconstruction, and the "jellyfish" in the image likely did not exist.
Acritarch
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Acritarchs are organic microfossils, known from the Archean eon of the Precambrian to the present. The classification is a catch all term used to refer to any organic microfossils that cannot be assig
End-Ediacaran extinction
…period, the final period of the Proterozoic eon. Evidence suggesting that such a mass extinction occurred includes a massive reduction in diversity of acritarchs, the sudden disappearance of the Ediacara biota and calcifying organisms, and the time gap before Cambrian organisms "replaced" them. Some lines of…
Acritarch from the Weng'an biota c. 570–609 mya