Hemiaulus echinulatus Jousé (1951)
Comment: Well-preserved valve with linking spines still present at the summits of the polar elevations. Note also the well-preserved hyaline ridge following the undulations of the valve face. Only the mantle margin shows some slight damage.
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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