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The sedimentary rock in Guizhou is well developed and widely distributed.
Stratigraphical units of sedimentary rock are perfect from the middle
Proterozic to Quaternary system in this area. Because Guizhou area in
geological history still was covered by seawater before late Triassic
period, the abundantly fossiliferous marine strata is well developed.
Continental strata consists of a little rock of Jurassic, Cretaceous,
Tertiary and soil of quaternary. The Jurassic strata exposed over western
Guizhou as a whole, while the others only scatter.
The fossils discovered in strata of Guizhou are very abundant and have
various types in preserved. They are distributed among 20 phyla and include
a more than 4000 species, 2000 genera, 200 families, based on the above
features, Guizhou is aptly named as "Palaeontological Kingdom"
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