Biostratigraphical dating of the Thornton Fossil Konservat-Lagerstätte, Silurian, Illinois, USA
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Abstract
Graptoloid graptolites, conodonts and chitinozoans from the lower part of the Racine Dolomite Formation at the Material Services Corporation quarry at Thornton indicate that the Fossil Konservat-Lagerstätte here is of late Sheinwoodian (early Wenlock) age. It is thus of an age approximately midway between those of the other Midwest Lagerstätten: within the Brandon Bridge Formation at Waukesha (Telychian), and the Mississinewa Shale (Gorstian) and Lecthaylus Shale (Gorstian). Conodonts indicate that the Fossil Konservat-Lagerstätte at Thornton corresponds to the ‘post Kockelella walliseri interregnum’ sensu Jeppsson (1997, Transactions of the Royal Society of Edinburgh: Earth Sciences88: 91–114)
Publication type | Article |
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Publication Subtype | Journal Article |
Title | Biostratigraphical dating of the Thornton Fossil Konservat-Lagerstätte, Silurian, Illinois, USA |
Series title | Geological Journal |
DOI | 10.1002/gj.916 |
Volume | 37 |
Issue | 3 |
Year Published | 2002 |
Language | English |
Publisher | Wiley |
Description | 10 p. |
First page | 269 |
Last page | 278 |
Online Only (Y/N) | N |
Additional Online Files (Y/N) | N |
Google Analytic Metrics | Metrics page |