“Permian”的概念、定义、翻译、参考文献-科学参考

Permian

Biology

The last geological period in the Palaeozoic era. It extended from the end of the Carboniferous period, about 299 million years ago, to the beginning of the Mesozoic era, about 252 million years ago. It was named by the British geologist Roderick Murchison (1792–1871) in 1841 after the Perm province in Russia. In some areas continental conditions prevailed, which continued into the following period, the Triassic. These conditions resulted in the deposition of the New Red Sandstone. During the period a number of animal groups became extinct, including the trilobites, tabulate and rugose corals, and blastoids (see mass extinction). Amphibians and reptiles continued to be the dominant land animals and gymnosperms replaced ferns, clubmosses, and horsetails as the dominant plants.
http://www.ucmp.berkeley.edu/permian/permian.php Overview of the Permian period from the University of California Museum of Paleontology

Geology and Earth Sciences

Final period (299–251 Ma ago) of the Palaeozoic era, which is named after the central Russian province of Perm. The period is often noted for the widespread continental conditions that prevailed in the northern hemisphere and for the extensive nature of the southern hemisphere glaciation. Many groups of animals and plants, including the rugose corals (Rugosa), trilobites (Trilobita), and blastoid echinoderms (Blastozoa), vanished at the end of the Permian, in a mass extinction that was one of the great crises in the history of life. The period is divided into nine ages: the Asselian, Sakmarian, Artinskian, and Kungurian ages comprise the Cisuralian epoch; the Roadian, Wordian, and Capitanian ages comprise the Guadalupian epoch, and the Wuchiapingian and Changhsingian ages comprise the Lopingian epoch.
https://ucmp.berkeley.edu/permian/permian.php The Permian Period.

Geography

The latest period of Palaeozoic time, stretching approximately from 290 to 248 million years bp. The Permian mass extinction occurred between 290 and 252 million years ago, during which 95% of all marine life on Earth was killed, and 70% of all land families became extinct.
http://palaeo.gly.bris.ac.uk/palaeofiles/permian/intro.html Bristol University website.
http://www.ucmp.berkeley.edu/permian/permian.html An overview of the Permian period.

单词	Permian
释义	Permian Biology The last geological period in the Palaeozoic era. It extended from the end of the Carboniferous period, about 299 million years ago, to the beginning of the Mesozoic era, about 252 million years ago. It was named by the British geologist Roderick Murchison (1792–1871) in 1841 after the Perm province in Russia. In some areas continental conditions prevailed, which continued into the following period, the Triassic. These conditions resulted in the deposition of the New Red Sandstone. During the period a number of animal groups became extinct, including the trilobites, tabulate and rugose corals, and blastoids (see mass extinction). Amphibians and reptiles continued to be the dominant land animals and gymnosperms replaced ferns, clubmosses, and horsetails as the dominant plants. http://www.ucmp.berkeley.edu/permian/permian.php Overview of the Permian period from the University of California Museum of Paleontology Geology and Earth Sciences Final period (299–251 Ma ago) of the Palaeozoic era, which is named after the central Russian province of Perm. The period is often noted for the widespread continental conditions that prevailed in the northern hemisphere and for the extensive nature of the southern hemisphere glaciation. Many groups of animals and plants, including the rugose corals (Rugosa), trilobites (Trilobita), and blastoid echinoderms (Blastozoa), vanished at the end of the Permian, in a mass extinction that was one of the great crises in the history of life. The period is divided into nine ages: the Asselian, Sakmarian, Artinskian, and Kungurian ages comprise the Cisuralian epoch; the Roadian, Wordian, and Capitanian ages comprise the Guadalupian epoch, and the Wuchiapingian and Changhsingian ages comprise the Lopingian epoch. https://ucmp.berkeley.edu/permian/permian.php The Permian Period. Geography The latest period of Palaeozoic time, stretching approximately from 290 to 248 million years bp. The Permian mass extinction occurred between 290 and 252 million years ago, during which 95% of all marine life on Earth was killed, and 70% of all land families became extinct. http://palaeo.gly.bris.ac.uk/palaeofiles/permian/intro.html Bristol University website. http://www.ucmp.berkeley.edu/permian/permian.html An overview of the Permian period.
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