Hemiaulus danicus Grunow (1884)
Comment: Remarkably well-preserved frustules.
Locality: Kamyshlov, Sverdlovsk District, Russia, sample: Hustedt Collection E1685 (early Eocene).
Photographed using: Zeiss Axio.A1, Plan-APOCHROMAT 100×/1.4 Oil DIC + Zeiss AxioCam ICc 5. Stacked using Helicon Focus.
Direct link to this page: https://fossil-diatoms.com/atlas/entry/37