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Cambrian - Wikipedia The Cambrian ( ˈkæmbri ən, ˈkeɪm - KAM-bree-ən, KAYM-) is the first geological period of the Paleozoic Era, and the Phanerozoic Eon [5] The Cambrian lasted 51 95 million years from the end of the preceding Ediacaran period 538 8 Ma (million years ago) to the beginning of the Ordovician Period 486 85 Ma [1]
Cambrian Period - Fossils, Rocks, Animals | Britannica Cambrian rocks have a special biological significance, because they are the earliest to contain diverse fossils of animals These rocks also include the first appearances of most animal phyla that have fossil records
The Cambrian Period - University of California Museum of Paleontology Almost every metazoan phylum with hard parts, and many that lack hard parts, made its first appearance in the Cambrian The only modern phylum with an adequate fossil record to appear after the Cambrian was the phylum Bryozoa, which is not known before the early Ordovician
Cambrian Period: Facts Information - Live Science Scientists find some of the best specimens for the “evolutionary experiments” of the Cambrian Period in the fossil beds of the Sirius Passet formation in Greenland; Chenjiang, China; and the
Cambrian Period: Facts, Information, and Timeline - A-Z Animals Often referred to as the biological big bang, the Cambrian explosion allowed life on earth to evolve from single-celled organisms to several new kingdoms and phyla Many geologic and climatic events also occurred during this period The Cambrian Period lasted for over 55 million years
Cambrian Period - National Geographic The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known The Cambrian Explosion saw an incredible diversity of life emerge, including many major
Cambrian Period - Geology Page The Cambrian is the first geological period of the Paleozoic Era, lasting from 541 0 ± 1 0 to 485 4 ± 1 9 million years ago (mya) and is succeeded by the Ordovician Its subdivisions, and indeed its base, are somewhat in flux
Cambrian Period summary | Britannica Cambrian Period, Oldest time division of the Paleozoic Era During the Cambrian, 541–485 4 million years ago, there were widespread seas and several scattered landmasses The largest continent was Gondwana The average climate was probably warmer than today, with less variation between regions
Cambrian Period—541 to 485. 4 MYA - U. S. National Park Service In 1835 both Sedgwick and Murchison named the rocks they studied for ancient Welsh tribes: Sedgwick used “Cambrian” and Murchison used “Silurian ” Each worker attempted to recognize breaks in the stratigraphic record as boundaries for his subdivision