Medina epoch
Me`di´na ep´och
| 1.(Geol.) A subdivision of the Niagara period in the American upper Silurian, characterized by the formations known as the Oneida conglomerate, and the Medina sandstone. See the Chart of Geology. |
| 单词 | medina epoch | ||
| 释义 | Medina epochMe`di´na ep´och
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