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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]
What Is the Cambrian Explosion and Why Was It So Important? Long before the flash of intelligence ignited in our human lineage, long before dinosaurs thundered across ancient Earth, before even the first forests or fish or eyes that could see, life on Earth lived in the quiet shadows
Cambrian Period - National Geographic Learn more about a time period marked by an intense burst of evolution The Cambrian period, part of the Paleozoic era, produced the most intense burst of evolution ever known The Cambrian
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 - Wikiwand Currently the boundaries of the Cambrian System, three series and six stages are defined by global stratotype sections and points [1] The lower boundary of the Cambrian was originally held to represent the first appearance of complex life, represented by trilobites
The Great Unconformity - Geology of Wyoming The contact between the Precambrian igneous metamorphic crystalline rock (2 6 to 2 8 billion years old) and overlying Cambrian Flathead Sandstone (520 million years old) is a 2 billion year gap in the rock record Very scenic walk or bike ride up Shoshone Canyon
Cambrian - New World Encyclopedia Earth's land and sea distribution in the Early Cambrian epoch about 528 million years ago During the Cambrian's 54 million years, sea level rose steadily from 30 to 90 meters (98 to 295 feet) above the current level
Cambrian - Simple English Wikipedia, the free encyclopedia The Cambrian is the first geological period of the Palaeozoic era and the Phanerozoic eon It lasted from 541 million years ago to 485 4 million years ago [1] Before it came the Ediacaran, and after it the Ordovician Biologists have learnt quite a lot about the soft parts of Cambrian animals