“Devonian”的概念、定义、翻译、参考文献-科学参考

Devonian

Biology

A geological period in the Palaeozoic era that extended from the end of the Silurian (about 419 million years ago) to the beginning of the Carboniferous (about 359 mya). It was named by Adam Sedgwick (1785–1873) and Roderick Murchison (1792–1871) in 1839. The Devonian is divided into seven stages based on invertebrate fossil remains, such as corals, brachiopods, ammonoids, and crinoids, found in marine deposits. There were also extensive continental deposits consisting of conglomerates, red silts, and sandstones, forming the Old Red Sandstone facies. Fossils in the Old Red Sandstone include fishes and the earliest land plants (see rhyniophytes; trimerophytes; zosterophyllophytes). Graptolites became extinct early in the Devonian and the trilobites declined.
http://www.ucmp.berkeley.edu/devonian/devonian.php The Devonian period as described on the website of the University of California Museum of Paleontology

Geology and Earth Sciences

The fourth of the six periods of the Palaeozoic era and the first of the Upper Palaeozoic sub-era. It began about 416 Ma ago and ended about 359.2 Ma ago. In Europe there are both marine and continental facies present, the latter being commonly known as the Old Red Sandstone. Although originally described from the type area in Devon, the marine Devonian is subdivided stratigraphically into stages established in the exceptionally fossiliferous deposits of the Ardennes in Belgium. These stages are the Lochkovian (416–411.2 Ma ago), Praghian (411.2–407 Ma ago), and Emsian (407–397.5 Ma ago) of the Lower Devonian, the Eifelian (397.5–391.8 Ma ago) and Givetian (391.8–385.3 Ma ago) of the Middle Devonian, and the Frasnian (385.3–374.5 Ma ago) and Famennian (374.5–359.2 Ma ago) of the Upper Devonian. The subdivision of the marine deposits is based on lithologies and the presence of an abundant invertebrate fauna including goniatites and spiriferid brachiopods. The continental Old Red Sandstone deposits contain a fauna of jawless fish and plants belonging to the primitive psilophyte group. As a result of the Caledonian orogeny of late Silurian times, much of the British Isles was covered with continental red-bed facies.
https://ucmp.berkeley.edu/devonian/devonian.php The Devonian Period.

Geography

A period of Palaeozoic time stretching approximately from 395 to 345 million years bp.
http://www.ucmp.berkeley.edu/devonian/devonian.html An overview of the Devonian period.

单词	Devonian
释义	Devonian Biology A geological period in the Palaeozoic era that extended from the end of the Silurian (about 419 million years ago) to the beginning of the Carboniferous (about 359 mya). It was named by Adam Sedgwick (1785–1873) and Roderick Murchison (1792–1871) in 1839. The Devonian is divided into seven stages based on invertebrate fossil remains, such as corals, brachiopods, ammonoids, and crinoids, found in marine deposits. There were also extensive continental deposits consisting of conglomerates, red silts, and sandstones, forming the Old Red Sandstone facies. Fossils in the Old Red Sandstone include fishes and the earliest land plants (see rhyniophytes; trimerophytes; zosterophyllophytes). Graptolites became extinct early in the Devonian and the trilobites declined. http://www.ucmp.berkeley.edu/devonian/devonian.php The Devonian period as described on the website of the University of California Museum of Paleontology Geology and Earth Sciences The fourth of the six periods of the Palaeozoic era and the first of the Upper Palaeozoic sub-era. It began about 416 Ma ago and ended about 359.2 Ma ago. In Europe there are both marine and continental facies present, the latter being commonly known as the Old Red Sandstone. Although originally described from the type area in Devon, the marine Devonian is subdivided stratigraphically into stages established in the exceptionally fossiliferous deposits of the Ardennes in Belgium. These stages are the Lochkovian (416–411.2 Ma ago), Praghian (411.2–407 Ma ago), and Emsian (407–397.5 Ma ago) of the Lower Devonian, the Eifelian (397.5–391.8 Ma ago) and Givetian (391.8–385.3 Ma ago) of the Middle Devonian, and the Frasnian (385.3–374.5 Ma ago) and Famennian (374.5–359.2 Ma ago) of the Upper Devonian. The subdivision of the marine deposits is based on lithologies and the presence of an abundant invertebrate fauna including goniatites and spiriferid brachiopods. The continental Old Red Sandstone deposits contain a fauna of jawless fish and plants belonging to the primitive psilophyte group. As a result of the Caledonian orogeny of late Silurian times, much of the British Isles was covered with continental red-bed facies. https://ucmp.berkeley.edu/devonian/devonian.php The Devonian Period. Geography A period of Palaeozoic time stretching approximately from 395 to 345 million years bp. http://www.ucmp.berkeley.edu/devonian/devonian.html An overview of the Devonian period.
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