Geological Society of America
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Supplemental material: Subdivision of Ordovician and Silurian time scale using accumulation rates of graptolitic shale

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journal contribution
posted on 1977-01-01, 00:00 authored by M. Churkin
GSA Data Repository Item 7711, Geology, Vol. 5, p. 452. File size: 6 p., about 305 K bytes.

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