Dictionary of Geotourism

2020 Edition
| Editors: Anze Chen, Young Ng, Erkuang Zhang, Mingzhong Tian

Cambrian Period

Reference work entry
DOI: https://doi.org/10.1007/978-981-13-2538-0_225

The Cambrian Period is the first period of the Palaeozoic Era, and it lasted from 542 million to 488 million years ago. The Cambrian System includes the rocks that formed during the Cambrian Period. The term Cambrian System was first used by R.A. Sedgwick in 1838 and at that time generally represented the entire Lower Palaeozoic Erathem below the ancient red sandstone of the Devonian System. The Cambrian Period was characterised by the remarkable growth of living organisms and the preservation of abundant fossils. Starting in the Cambrian Period, the demarcation of series and stages could be established based on concrete biostratigraphic evidence and biological evolution, and this information had significance for global correlations. Trilobites are the most important fauna fossils of the Cambrian Period; and hence, the Cambrian is also known as the ‘trilobite period’. Many phyla of organisms of the Chengjiang Biota from the Early Cambrian Period in Yunnan Province have been...

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