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+ 奧陶紀 奥陶纪 [Ao4 tao2 ji4] /Ordovician (geological period 495-440m years ago)/

+ 志留紀 志留纪 [Zhi4 liu2 ji4] /Silurian (geological period 440-417m years ago)/

+ 得文 得文 [De2 wen2] /Devon (county of southwest England)/

+ 泥盆紀 泥盆纪 [Ni2 pen2 ji4] /Devonian (geological period 417-354m years ago)/

+ 石炭紀 石炭纪 [Shi2 tan4 ji4] /Carboniferous (geological period 354-292m years ago)/

+ 二疊紀 二叠纪 [Er4 die2 ji4] /Permian (geological period 292-250m years ago)/

+ 前寒武紀 前寒武纪 [Qian2 Han2 wu3 ji4] /pre-Cambrian (geological period before c. 540m years ago)/

+ 顯生宙 显生宙 [Xian3 sheng1 zhou4] /Phanerozoic (geological eon lasting since the Cambrian 武紀|寒武纪, c. 540m year ago/

+ 元古宙 元古宙 [Yuan2 gu3 zhou4] /pre-Cambrian (geological eon 2500-645m)/

+ 元古代 元古代 [Yuan2 gu3 dai4] /Proterozoic (geological era 2500-540m years ago)/

+ 太古宙 太古宙 [Tai4 gu3 zhou4] /Archaean (geological eon before 2500m years ago)/

+ 太古代 太古代 [Tai4 gu3 dai4] /Archaeozoic (geological era before 2500m years ago)/

+ 三葉蟲 三叶虫 [san1 ye4 chong2] /trilobite/

+ 底界 底界 [di3 jie4] /lower boundary/

+ 莫霍洛維奇 莫霍洛维奇 [Mo4 huo4 luo4 wei2 qi2] /Andrija Mohorovichich or Mohorovičić (1857-1936), Croatian geologist and seismologist who discovered the Mohorovichich discontinuity or Moho/

+ 不連續面 不连续面 [bu4 lian2 xu4 mian4] /surface of discontinuity/

+ 莫霍洛維奇不連續面 莫霍洛维奇不连续面 [Mo4 huo4 luo4 wei2 qi2 bu4 lian2 xu4 mian4] /Mohorovichich discontinuity (lower boundary of the earth's lithosphere)/abbr. to Moho 莫霍面/

+ 莫霍面 莫霍面 [Mo4 huo4 mian4] /Moho (Mohorovichich discontinuity, the lower boundary of the earth's lithosphere)/

+ 滅絕 灭绝 [mie4 jue2] /to extinguish/extinct/to die out/