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出典:Wiktionary
Devon + -ian. Doublet of Dumnonian.
Devonian (not comparable)
Devonian (複数形 Devonians)
Devonian
出典:Wikipedia
出典:『Wikipedia』 (2011/06/23 00:21 UTC 版)
The Devonian is a geologic period and system of the Paleozoic Era spanning from 416 to 359.2 million years ago (ICS, 2004, chart). It is named after Devon, England, where rocks from this period were first studied.