Lower Paleozoic

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• Paleozoic Era — or Palaeozoic Era Major interval of geologic time, с 543–248 million years ago. From the Greek for ancient life, it is the first era of the Phanerozoic Eon and is followed by the Mesozoic Era. It is divided into six periods: (from oldest to… …   Universalium

• Lower Silesia — This article is about the historical region. For the Polish administrative region, see Lower Silesian Voivodeship. For the former Prussian province, see Lower Silesia Province (Prussia). Silesian coat of arms, Hugo Gerhard Ströhl (1851 1919)… …   Wikipedia

• GEOGRAPHICAL SURVEY — Names The name Ereẓ Israel (the Land of Israel) designates the land which, according to the Bible was promised as an inheritance to the Israelite tribes. In the course of time it came to be regarded first by the Jews and then also by the… …   Encyclopedia of Judaism

• Cambrian Period — Oldest time division of the Paleozoic Era. During the Cambrian, 543–490 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… …   Universalium

• Wales — This article is about the country. For other uses, see Wales (disambiguation) …   Wikipedia

• History of the Earth — For the history of modern humans, see History of the world. Geological time put in a diagram called a geological clock, showing the relative lengths of the eons of the Earth s history The history of the Earth describes the most important events… …   Wikipedia

• Cambrian — For other uses, see Cambrian (disambiguation). Cambrian Period 542–488.3 million years ago …   Wikipedia

• Geology of the Grand Teton area — The geology of the Grand Teton area consists of some of the oldest rocks and one of the youngest mountain ranges in North America. The Teton Range, mostly located in Grand Teton National Park, started to grow some 9 million years ago. An older… …   Wikipedia

• Devonian Period — Interval of geologic time from 417 to 354 million years ago; it was the fourth period of the Paleozoic Era. During the Devonian, a giant continent was situated in the Southern Hemisphere (see Gondwana), and other landmasses were located in the… …   Universalium

• Geological history of India — The geological history of India started with the geological evolution of rest of the Earth i.e. 4.57 bya (billion years ago). India has a diverse geology. Different regions in India contain rocks of all types belonging to different geologic… …   Wikipedia

• Nubian Sandstone — refers to a variety of sedimentary rocks deposited on the Precambrian Basement in the eastern Sahara, north east Africa and Arabia. It consist of continental sandstones with thin beds of marine limestones, and marls. Nubian sandstone was… …   Wikipedia