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a male given name
Yukinori is my best friend.
a female given name
Mitsuki is my best friend.
the Permian period
The Permian period is one of the most important times in Earth's history.
the Carboniferous
The Carboniferous was a very important period in the history of the Earth.
Alternative form of デボン紀
The Devonian is a geological era, referring to the period from about 400 million years ago to 360 million years ago.
Alternative form of オルドビス紀 (Orudobisu-ki, “Ordovician”)
The Ordovician is one of the geological eras.
the Devonian period
The Devonian period was a very important time in the history of the Earth.
Synonym of 三畳紀 (Sanjōki, “Triassic”)
The Triassic period is a part of Earth's history, when dinosaurs first appeared.
the Cambrian
The Cambrian was a period of explosive biodiversity in the history of the Earth.
Alternative spelling of 白亜紀 (“Cretaceous period”)
The Cretaceous period is the era in Earth's history when dinosaurs thrived the most.
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