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Astrocysta ampla
General Images Stratigraphy Description Literature Notes
Year Author Title
The stratigraphic distribution of organic-walled dinoflagellate cysts in the Cretaceous and Tertiary
Late Cretaceous (Campanian) organic-walled micro- plankton from the interior plains of Canada, Wyo- ming and Texas: biostratigraphy, palaeontology and palaeoenvironmental interpretation.
Dinoflagellate cysts and acritarchs from the Bearpaw Formation (Upper Campanian) of southern Alberta, Canada
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