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Graptolite Working Group - An association of geologists, paleontologists, and others who have expertise in graptolites or an interest in their use in solving geological problems.
Graptolites - Graptolites collected from the Athens Shale formation (Ordovician age) near Montevalo, Alabama.
The British and Irish Graptolite Group - Information and topical news about graptolites, and those scientists working on graptolites in the UK and Ireland
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