古生代 [－－－]

Jyutping gu2 sang1 doi6
Pinyin gǔ shēng dài

Definitions (CC-CEDICT)
  1. Paleozoic, geological era 545-250m years ago, covering Cambrian 寒武紀|寒武纪, Ordovician 奧陶紀|奥陶纪, Silurian 志留紀|志留纪, Devonian 泥盆紀|泥盆纪, Carboniferous 石炭紀|石炭纪, Permian 二疊紀|二叠纪
Definitions (Wiktionary)
  1. name
    the Paleozoic era (part of the Phanerozoic eon, spanning from 541 to 252.17 million years ago)