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Article: New data on Tremadoc graptolites from Yukon, Canada

Publication: Palaeontology
Volume: 18
Part: 4
Publication Date: November 1975
Page(s): 883 887
Author(s): D. E. Jackson
Addition Information

How to Cite

JACKSON, D. E. 1975. New data on Tremadoc graptolites from Yukon, Canada. Palaeontology18, 4, 883–887.

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The Palaeontological Association (Free Access)


The Tremadocian subzones of Staurograptus tenuis. Anisograptus richardsoni. Clonograptus aureus, and Adelagraptus anriquus are given full zonal status in northern Richardson Mountains. Bryograptus ramosus Broggor and a species of Dictyonema are described from the upper Tremadotc. The occurrence of B. ramosus in the C. aureus Zone supports a correlation with shales of 3a(beta symbol) age in Norway.
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