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Cymatiogalea velifera
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General
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Stratigraphy
Description
Literature
Notes
Year
Author
Title
1958
Downie, C.
An assemblage of microplankton from the Shineton Shale (Tremadocian)
1969
Martin, F.
Les Acritarches de l'Ordovicien et du Silurien belges: Determination et valeur stratigraphique
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