奥陶纪

奧陶紀

Àotáojì

noun

Meanings

1 Ordovician (geological period, ~485-444 million years ago)

Characters

geological period

Examples

HSK 6

奥陶纪是海洋生物大爆发的时期。

Àotáojì shì hǎiyáng shēngwù dà bàofā de shíqī.

The Ordovician was a period of major diversification of marine life.

HSK 7-9

三叶虫在奥陶纪非常繁盛。

Sānyèchóng zài Àotáojì fēicháng fánshèng.

Trilobites flourished during the Ordovician.

Tips

culture

奥陶 is a phonetic transcription of 'Ordovices,' an ancient Welsh tribe - the geological period was named after rocks first studied in their territory. 纪 means 'period' in geology (cf. 侏罗纪 = Jurassic, 白垩纪 = Cretaceous).

Stroke Order

奥 ào

陶 táo

纪 jì