Doushantuo Formation  From Wikipedia, the free encyclopedia
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search Doushantuo Formation Stratigraphic range: 635–551Ma[1]
Doushantou Embryo Yinetal2007.jpg A purported Ediacaran embryo
contained within an acritarch from the Doushantuo formation
Location South China  The Doushantuo Formation (Chinese: 陡山沱;
pinyin: dǒu shān tuó) is a Lagerstätte in Guizhou Province,
China that is notable for being one of the oldest beds to
contain minutely preserved microfossils, phosphatic fossils that
are so characteristic they have given their name to "Doushantuo
type preservation". The formation is of particular interest
because it appears to cover the boundary between the problematic
organisms of the Ediacaran geological period and the more
familiar fauna of the Cambrian explosion of lifeforms whose
descendents are recognizable. Taken as a whole, the Doushantuo
Formation ranges from about 635 Ma (million years) ago at its
base to about 551 Ma at its top, predati