古元古代

Chinese

		ancient; old	primeval past	era
simp. and trad. (古元古代)		古	元古	代

Pronunciation

Mandarin
(Pinyin): Gǔyuángǔ Dài

(Zhuyin): ㄍㄨˇ ㄩㄢˊ ㄍㄨˇ ㄉㄞˋ

Mandarin
- (Standard Chinese)⁺
  - Hanyu Pinyin: Gǔyuángǔ Dài
  - Zhuyin: ㄍㄨˇ ㄩㄢˊ ㄍㄨˇ ㄉㄞˋ
  - Tongyong Pinyin: Gǔyuángǔ Dài
  - Wade–Giles: Ku³-yüan²-ku³ Tai⁴
  - Yale: Gǔ-ywán-gǔ Dài
  - Gwoyeu Romatzyh: Guuyuanguu Day
  - Palladius: Гуюаньгу Дай (Gujuanʹgu Daj)
  - Sinological IPA ^(key): /ku²¹⁴⁻²¹ ɥɛn³⁵ ku²¹⁴⁻²¹ taɪ̯⁵¹/

Proper noun

古元古代

(geology) the Paleoproterozoic era (part of the Proterozoic eon, spanning from 2.5 to 1.6 billion years ago)

See also

中元古代 (Zhōngyuángǔ Dài)
元古宙 (Yuángǔ Zhòu)

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