古生代 Paleozoic

（重定向自Palaeozoic）

古生代（Paleozoic，符号PZ）是地质时代中的一个代，开始于同位素年龄542±0.3百万年（Ma），结束于251±0.4Ma。

古生代是显生宙的第一个代，上一个代是元古宙的新元古代，下一个代是中生代。古生代包括寒武纪、奥陶纪、志留纪、泥盆纪、石炭纪、二叠纪。其中寒武纪、奥陶纪、志留纪又合称早古生代，泥盆纪、石炭纪、二叠纪又合称晚古生代。

古生代意为远古的生物时代，持续约3亿年。对动物界来说，这是一个重要时期。它以一场至今不能完全解释清楚的进化拉开了寒武纪的序幕。寒武纪动物的活动范围只限于海洋，但在古生代的廷续下，有些动物的活动转向干燥的陆地。古生代后期，爬行动物和类似哺乳动物的动物出现，古生代以迄今所知最大的一次生物绝灭宣吿完结。

单词	Palaeozoic
释义	Palaeozoic /ˌpæliəu'zəuik/ 英汉-汉英词典 n.,adj. 古生代(的) 词组 \| 习惯用语 palaeozoic era 古生；古生代英语例句库 The Xiaorequanzi copper (zinc) deposit is situated in the south of a paleovolcanic domain in Haerlik-Danahu late Palaeozoic continental margin island. 摘要位于东天山的小热泉子铜（锌）矿床是该地区有较大开发意义的矿床类型。 Based on the petrographical analysis of key wells,log data is used to investigate sedimentary characters of early palaeozoic in Sulige area,Erdos basin. 以关键井岩相分析为基础,利用测井资料研究了鄂尔多斯盆地苏里格地区上古生界测井沉积特征。声明：以上例句、词性分类均由互联网资源自动生成，未经过人工审核，其表达内容亦不代表本软件的观点；若发现问题，欢迎向我们指正。原声例句 PBS地球-动物趣闻 Dimetrodon dominated the last period of the Palaeozoic, the Permian Period, alongside many other animals that can seem at once familiar and … not. 异齿龙主宰了古生代的最后一个时期，即二叠纪时期，与许多其他看起来既熟悉又… … 不熟悉的动物一起。物种起源 But certain Jurassic and Triassic forms are now commonly admitted to be teleostean; and even some palaeozoic forms have thus been classed by one high authority. 但是某些侏罗纪和三叠纪的形式现在普遍被认为是硬骨动物；甚至一些古生代类型也因此被一位权威机构分类。物种起源 With respect to the terrestrial productions which lived during the Secondary and Palaeozoic periods, it is superfluous to state that our evidence is fragmentary in an extreme degree. 至于生活在第二纪和古生代的陆生生物，说我们的证据极其零碎是多余的。 PBS地球-动物趣闻 With its lizard-like appearance and that distinctive sail on it back, Dimetrodon is practically the mascot of the Palaeozoic Era, a time before flowers, birds, mammals, and even crocodiles. 凭借其蜥蜴般的外观和独特的背帆，异齿龙实际上是古生代的吉祥物，那时候还没有花朵、鸟类、哺乳动物，甚至鳄鱼。中文百科古生代 Paleozoic （重定向自Palaeozoic）古生代（Paleozoic，符号PZ）是地质时代中的一个代，开始于同位素年龄542±0.3百万年（Ma），结束于251±0.4Ma。古生代是显生宙的第一个代，上一个代是元古宙的新元古代，下一个代是中生代。古生代包括寒武纪、奥陶纪、志留纪、泥盆纪、石炭纪、二叠纪。其中寒武纪、奥陶纪、志留纪又合称早古生代，泥盆纪、石炭纪、二叠纪又合称晚古生代。古生代意为远古的生物时代，持续约3亿年。对动物界来说，这是一个重要时期。它以一场至今不能完全解释清楚的进化拉开了寒武纪的序幕。寒武纪动物的活动范围只限于海洋，但在古生代的廷续下，有些动物的活动转向干燥的陆地。古生代后期，爬行动物和类似哺乳动物的动物出现，古生代以迄今所知最大的一次生物绝灭宣吿完结。英语百科 Paleozoic 古生代（重定向自Palaeozoic） The Paleozoic (or Palaeozoic) Era (pronunciation: /ˌpeɪliəˈzoʊɪk, ˌpæ-/; from the Greek palaios (παλαιός), "old" and zoe (ζωή), "life", meaning "ancient life") is the earliest of three geologic eras of the Phanerozoic Eon, spanning from 541 to 252.17 million years ago. It is the longest of the Phanerozoic eras, and is subdivided into six geologic periods (from oldest to youngest): the Cambrian, Ordovician, Silurian, Devonian, Carboniferous, and Permian. The Paleozoic comes after the Neoproterozoic Era of the Proterozoic Eon, and is followed by the Mesozoic Era.
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Palaeozoic /ˌpæliəu'zəuik/

古生代 Paleozoic

Paleozoic 古生代