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The Cambrian marked a profound change in life on Earth: prior to the Cambrian, the majority of living organisms on the whole were small, unicellular, and simple ( Ediacaran fauna and earlier Tonian Huainan biota being notable exceptions). Complex, multicellular organisms gradually became more common in the millions of years immediately preceding the Cambrian, but it was not until this period ...
Upper GSSP ratified. 2003 [3] The Miaolingian is the third Series of the Cambrian Period, and was formally named in 2018. [4] It lasted from about 509 to 497 million years ago and is divided in ascending order into 3 stages: the Wuliuan, Drumian, and Guzhangian.
Cambrian Stage 3 is the still unnamed third stage of the Cambrian. It succeeds Cambrian Stage 2 and precedes Cambrian Stage 4, although neither its base nor top have been formally defined. The plan is for its lower boundary to correspond approximately to the first appearance of trilobites, about 521 million years ago, [2] though the globally ...
Blackberry Hill is a Konservat-Lagerstätte of Cambrian age located within the Elk Mound Group in Marathon County, Wisconsin. [1] It is found in a series of quarries and outcrops that are notable for their large concentration of exceptionally preserved trace fossils in Cambrian tidal flats. One quarry in particular also has the distinction of ...
The Cambrian–Ordovician extinction event, also known as the Cambrian-Ordovician boundary event, [1] was an extinction event that occurred approximately 485 million years ago ( mya) in the Paleozoic era of the early Phanerozoic eon. [2] It was preceded by the less-documented (but probably more extensive) End-Botomian mass extinction around 517 ...
t. e. 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 a sudden radiation of complex life occurred, and practically all major animal phyla started appearing in the fossil record.
Cambrian College is a college of applied arts and technology in Greater Sudbury, Ontario, Canada. Established in 1967, and funded by the province of Ontario, Cambrian has campuses in Sudbury, Espanola and Little Current.