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Graptolites of New York / by Rudolf Ruedemann.
By: Ruedemann, Rudolf,
Publication info: Albany :New York State Education Dept.,1904-1908.
Contributed by: Gerstein - University of Toronto (archive.org)
Subjects: Graptolites New York (State) Paleontology
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Llandoverian graptolites of the northern Canadian Cordillera : Petalograptus, Cephalograptus, Rhaphidograptus, Dimorphograptus, Retiolitidae, and Monograptidae /
By: Lenz, Alfred C.,
Publication info: Toronto :Royal Ontario Museum,1982.
Contributed by: ROM - University of Toronto (archive.org)
Subjects: Graptolites Northwest Territories Paleontology Silurian Yukon Territory
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