Last Updated
：2026/01/06
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) Meaning
（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
Chinese (Traditional) Meaning
（日語）奧陶紀的舊稱。 / 即古生代的奧陶紀。
Korean Meaning
오르도비스기를 가리키는 옛말 / 고생대 초기의 지질시대인 오르도비스기
Vietnamese Meaning
(Lỗi thời) tên gọi của kỷ Ordovic. / Đồng nghĩa lỗi thời của kỷ Ordovic trong địa chất học.
Tagalog Meaning
(lipas) katawagan sa Panahong Ordovisyan / yugto ng Paleozoic sa pagitan ng Cambrian at Silurian
Sense（1）
(obsolete) Synonym of オルドビス紀
（ canonical ）
（ romanization ）
（ hiragana ）
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奥陶紀
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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。
Japanese - English
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