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Graptolites from near the Ordovician-Silurian Boundary in Illinois and Iowa
David K. Loydell, Andrew Mallett, Donald G. Mikulic, Joanne Kluessendorf and Rodney D. NorbyVolume:
76
Language:
english
Journal:
Journal of Paleontology
DOI:
10.2307/1307182
Date:
April, 2002
File:
PDF, 797 KB
english, 2002