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The Ordovician, an era name used in paleontology, is now called the Ordovician.
The Ordovician, an era name used in paleontology, is now called the Ordovician.
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奥陶紀は、古生物学で使われる時代の名前で、現在ではオルドビス紀と呼ばれています。
Related words
奥陶紀
Hiragana
おうとうき
Proper noun
obsolete
Japanese Meaning
古生代の地質時代区分の一つ。現在では「オルドビス紀」と呼ばれる時代を指す、古い呼称・異名。約4億8800万年前から約4億4400万年前までの期間に相当し、三葉虫や腕足類などの海洋生物が繁栄した時代。
Easy Japanese Meaning
とてもむかしのちきゅうのじだいのなまえでありオルドビスきとおなじいみ
Chinese (Simplified)
（旧称）“奥陶纪”的别称 / （旧称）古生代早期的地质时期名，介于寒武纪与志留纪之间
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