The graptolites " Pristiograptus " praedeubeli (Jaeger) and " Pristiograptus " ludensis (Murchison) (uppermost Wenlock, Silurian) from Arctic Canada: taxonomy and evolution

Isolated, uncompressed specimens of Pristiograptus dubius, "Pristiograptus" praedeubeli, and "Pristiograptus" ludensis are described from Arctic Canada. Pristiograptus dubius and early forms of "P." praedeubeli are very similar, suggesting a respective, ancestor-descend...

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Bibliographic Details
Published in:Canadian Journal of Earth Sciences
Main Author: Lenz, Alfred C.
Format: Article in Journal/Newspaper
Language:English
Published: Canadian Science Publishing 1994
Subjects:
General Earth and Planetary Sciences
Arctic
Canada
Murchison
Online Access:http://dx.doi.org/10.1139/e94-125
http://www.nrcresearchpress.com/doi/pdf/10.1139/e94-125

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