Costopyxis schulzii (Steinecke) Gleser (1984)
Comment: Medium-sized, domed valve, with multiple tubes projecting from the summit of the dome.
Locality: Eidsbotn Fjord, Devon Island, Nunavut, Canada, sample: EF0103 (Late Cretaceous).
Photographed using: Zeiss Axio.A1, Plan-APOCHROMAT 100×/1.4 Oil DIC + Zeiss AxioCam ICc 5. Stacked using Helicon Focus.
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