Paleozoic - Wikipedia
It was redefined by John Phillips (1800–1874) in 1840 to cover the Cambrian to Permian periods. [5] It is derived from the Greek palaiós (παλαιός, "old") and zōḗ (ζωή, "life") meaning "ancient …
Paleozoic Era | Description, Climate, & Facts | Britannica
2024年10月1日 · Paleozoic Era, major interval of geologic time that began 538.8 million years ago with the Cambrian explosion, an extraordinary diversification of marine animals, and ended …
古生代 - 维基百科，自由的百科全书
古生代 （Paleozoic，符号PZ）是 地球地质历史 中 显生宙 的第一个 代，开始于 同位素年龄 5.42亿年前（542±0.3 Ma），结束于2.51亿年前（251±0.4 Ma），上承 元古宙 的 新元古 …
古生代 - 百度百科
古生代（Paleozoic，符号PZ)是 地质时代 中的一个时代，开始于 同位素年龄 538.8±0.2百万年 (Ma)，结束于251.902±0.024Ma [9]。. 古生代属于 显生宙，上一个代是 新元古代，下一个代 …
Paleozoic Era summary | Britannica
Paleozoic Era, or Palaeozoic Era, Major interval of geologic time, c. 542–251 million years ago. From the Greek for “ancient life,” it is the first era of the Phanerozoic Eon and is followed by …
Paleozoic | U.S. Geological Survey - USGS.gov
Paleozoic (541-252 million years ago) means ‘ancient life.’. The oldest animals on Earth appeared just before the start of this era in the Ediacaran Period, but scientists had not yet discovered …
The Paleozoic Era - University of California Museum of Paleontology
The Paleozoic Era. The Paleozoic is bracketed by two of the most important events in the history of animal life. At its beginning, multicelled animals underwent a dramatic in diversity, and …
Paleozoic - New World Encyclopedia
The Paleozoic era (from the Greek palaio, meaning "old" and zoion, "animals," meaning "ancient life") is an interval of about 291 million years defined on the geologic timescale as spanning …
Paleozoic - Encyclopedia.com
2018年5月8日 · Palaeozoic (Paleozoic) The first of the 3 eras of the Phanerozoic, about 590–248 Ma ago. The Cambrian, Ordovician, and Silurian Periods together form the Lower Palaeozoic …
Impacts of spatial and environmental differentiation on early ...
2019年11月18日 · We present early Palaeozoic genus-level α, β and γ diversity curves for molluscs, brachiopods, trilobites and echinoderms and compare them with measures of spatial …