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中三叠世

中三叠世
247.2 – ~237 百万年前
中三叠世壳灰岩于德国巴登-符腾堡
地质年代
三叠纪主要分界
-250 —
-245 —
-240 —
-235 —
-230 —
-225 —
-220 —
-215 —
-210 —
-205 —
-200 —
植被完全恢复[1]
兰格利亚火山爆发事件
三叠纪时间表
直轴:百万年前
词源
名称是否正式正式
具体信息
天体地球
适用区域全球(ICS)
适用时标ICS时间表
定义
地质年代单位
年代地层单位
名称是否正式正式
下边界定义未正式定义
候选的定义下边界
  • 牙形石物种Chiosella timorensis的首次出现
  • Base of magnetic zone MT1n
下边界GSSP候选
上边界定义菊石物种Daxatina canadensis的首次出现
上边界GSSP位置意大利多洛米蒂山Prati di Stuores
46°31′37″N 11°55′49″E / 46.5269°N 11.9303°E / 46.5269; 11.9303
GSSP批准时间2008[3]:414–430

中三叠世/统三叠纪三个的第二个,或三叠三个的第二个。中三叠世自247.2Ma持续到237Ma(百万年前)。中三叠世之前是早三叠世,之后是晚三叠世。中三叠世可被分为安尼期拉丁期

以前,中三叠统也被称为壳灰岩统,现在只用于年代约在中三叠世西欧地层的特定单位。

动物相

二叠纪-三叠纪灭绝事件后,生态系统恢复的速度很缓慢。在中三叠世,许多生物群体都再次到达其多样性的顶点,如水生爬行动物(如鱼龙鳍龙海龙等)、辐鳍鱼类和许多无脊椎动物,如软体动物(菊石)。

中三叠世尚没有开花植物,以蕨类和苔藓为主。尼亚萨龙属等小型恐龙也开始出现。

参考

  1. ^ McElwain, J. C.; Punyasena, S. W. Mass extinction events and the plant fossil record. Trends in Ecology & Evolution. 2007, 22 (10): 548–557. PMID 17919771. doi:10.1016/j.tree.2007.09.003. 
  2. ^ Payne, J. L.; Lehrmann, D. J.; Wei, J.; Orchard, M. J.; Schrag, D. P.; Knoll, A. H. Large Perturbations of the Carbon Cycle During Recovery from the End-Permian Extinction. Science. 2004, 305 (5683): 506–9. PMID 15273391. doi:10.1126/science.1097023. 
  3. ^ Mietto, Paolo; Manfrin, Stefano; Preto, Nereo; Rigo, Manuel; Roghi, Guido; Furin, Stefano; Gianolla, Piero; Posenato, Renato; Muttoni, Giovanni; Nicora, Alda; Buratti, Nicoletta; Cirilli, Simonetta; Spötl, Christoph; Ramezani, Jahandar; Bowring, Samuel. The Global Boundary Stratotype Section and Point (GSSP) of the Carnian Stage (Late Triassic) at Prati Di Stuores/Stuores Wiesen Section (Southern Alps, NE Italy) (PDF). Episodes. September 2012, 35 [13 December 2020]. (原始内容存档 (PDF)于2021-12-29). 
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中三叠世
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