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When is a graptolite not a graptolite?

✍ Scribed by P. NOËL DILLY

Book ID
115304460
Publisher
John Wiley and Sons
Year
1994
Tongue
English
Weight
89 KB
Volume
27
Category
Article
ISSN
0024-1164

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Ordovician graptolite evolutionary radia
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## Abstract Based on the global graptolite genera and higher rank taxa, we propose three radiation stages through the Ordovician. The isograptid type of development is present within anisograptids predominating in the Tremadocian. Thus, the evolutionary radiation of the Anisograptid fauna from Trem