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The Cambrian (/ ˈ k æ m b r i. ə n, ˈ k eɪ m-/ KAM-bree-ən, KAYM-; sometimes symbolized Ꞓ) is the first geological period of the Paleozoic Era, and of the Phanerozoic Eon. The Cambrian lasted 53.4 million years from the end of the preceding Ediacaran period 538.8 Ma (million years ago) to the beginning of the Ordovician Period 485.4 Ma.
The Cambrian Line ( Welsh: Llinell y Cambrian ), sometimes split into the Cambrian Main Line ( Welsh: Prif Linell y Cambrian) and Cambrian Coast Line ( Welsh: Llinell Arfordir y Cambrian) for its branches, is a railway line that runs from Shrewsbury, England, westwards to Aberystwyth and Pwllheli in Wales.
The Cambrian Mountains ( Welsh: Mynyddoedd Cambria, in a narrower sense: Elenydd) are a series of mountain ranges in Wales . The term Cambrian Mountains used to apply to most of the upland of Wales, and comes from the country's Latin name Cambria. Since the 1950s, its application has become increasingly localised to the geographically ...
Cambrian is located in the South San Jose region of the city. Willow Glen is to its north, Los Gatos is to its south and west, Campbell is to its northwest, and Almaden is to its east. Most of Cambrian lies within San Jose's city limits, though a small portion is an unincorporated county pocket.
The Cambrian Heritage Railways is a heritage railway company, trust and society based at both Llynclys and Oswestry in its newly restored Oswestry railway station, Shropshire, England . Formed after the 2009 merger of the Cambrian Railways Society and the Cambrian Railways Trust, it aims to reinstate the infrastructure required to operate ...
The Stratigraphy of the Cambrian period currently has several schemes used for ordering geologic formations from the period. The International Commission on Stratigraphy −ICS scheme has set a stratotype section for the base of the Cambrian, dated quite accurately to 538.8 ± 0.2 million years ago. Russian and Chinese scientists have developed ...
The Cambrian explosion (also known as Cambrian radiation [1] or Cambrian diversification) is an interval of time approximately 538.8 million years ago in the Cambrian period of the early Paleozoic when there was a sudden radiation of complex life, and practically all major animal phyla started appearing in the fossil record.