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Hystrichosphaeridium sexradiatum
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General
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Stratigraphy
Description
Literature
Notes
Year
Author
Title
1965c
Eisenack, A.
Mikrofossilien aus dem Silur Gotlands. Hystrichosphären, Problematika.
1959b
Timofeev, B.V.
Drevneishaya flora Pribaltiki i ee stratigraficheskoe znachenie.
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