01 a. Designating, or pertaining to, certain beds, chiefly limestone, characteristic of the latest period of the Silurian age.
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1.
Designating, or pertaining to, certain beds, chiefly limestone, characteristic of the latest period of the Silurian age.(Geol.)
Phrases & compounds
Oriskany period —
a subdivision of the American Paleozoic system intermediate or transitional in character between the Silurian and Devonian ages. See Chart of Geology.