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Polystephanosphaera calathus
General Images Stratigraphy Description Literature Notes
Year Author Title
Microplankton from the Kellaways Rock and Oxford Clay of Yorkshire
Systematophora Klement and Polystephanosphaera Sarjeant
The complex chorate dinoflagellate cysts of the Bathonian to Oxfordian (Jurassic): their taxonomy and stratigraphic significance
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