Chengjiang biota | Wikipedia audio article
Channel: wikipedia tts
Date: 07/06/2019

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Maotianshan_Shales


00:00:58 1 History and scientific significance
00:02:30 2 Preservation and taphonomy
00:03:45 3 Chengjiang fauna
00:06:58 4 Guanshan fauna
00:07:11 5 Gallery
00:07:20 6 See also



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SUMMARY
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The Maotianshan Shales are a series of Early Cambrian deposits in the Chiungchussu Formation, famous for their Konservat Lagerstätten, deposits known for the exceptional preservation of fossilized organisms or traces. The Maotianshan Shales form one of some forty Cambrian fossil locations worldwide exhibiting exquisite preservation of rarely preserved, non-mineralized soft tissue, comparable to the fossils of the Burgess Shale. They take their name from Maotianshan Hill (Chinese: 帽天山; pinyin: Màotiānshān) in Chengjiang County, Yunnan Province, China.
The most famous assemblage of organisms are referred to as the Chengjiang biota for the multiple scattered fossil sites in Chengjiang. The age of the Chengjiang Lagerstätte is locally termed Qiongzhusian, a stage correlated to the late Atdabanian Stage in Siberian sequences of the middle of the Early Cambrian. 
The shales date to  ≤518 million years ago. The shales also contain the slightly younger Guanshan biota.