Ordovician and Silurian nautiloid cephalopods from Anticosti Island: traject across the Ordovician–Silurian (O–S) mass extinction boundary

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Canadian Journal of Earth Sciences, Vol. 45, Iss. 9, 2008-09 ,pp. : 1015-1038

NRC Research Press

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Silurian deformation and metamorphism of Ordovician arc rocks of the Casco Bay Group, south-central Maine

By West Jr. David P   Beal Heather M   Grover Timothy W  

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Late Ordovician–Silurian orthoconic nautiloid cephalopods in the View Point Formation conglomerate, Antarctic Peninsula

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Cambridge University Press

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Coral faunal turnover through the Ordovician–Silurian transition in South China and its global implications for carbonate stratigraphy and macroevolution

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Revision of the position of the Ordovician–Silurian boundary in southern Ontario: regional chronostratigraphic implications of δ¹³C chemostratigraphy of the Manitoulin Formation and associated strata

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Canadian Journal of Earth Sciences, Vol. 48, Iss. 11, 2011-11 ,pp. : 1447-1470

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