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Hystrichosphaeridium speciale
General Images Stratigraphy Description Literature Notes
Year Author Title
Late Cretaceous (Campanian) organic-walled micro- plankton from the interior plains of Canada, Wyo- ming and Texas: biostratigraphy, palaeontology and palaeoenvironmental interpretation.
Fossil dinoflagellates: index to genera and species, 1981 edition
Fossil sponges of the flint nodules in the Lower Cretaceous of Texas

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