Hemiaulus crenatus Greville (1865)
Comment: Well-preserved, remarkably long valve seen in girdle view, with a long external tube to the rimoportula, and well-preserved spatulate spines projecting from the marginal ridge surrounding the valve face.
Locality: Deep Sea Drilling Project Hole 386 (Bermuda Rise, western North Atlantic), sample: 43-386-15R-3, 62-63 cm (middle Eocene).
Photographed using: Zeiss Axio.A1, EC Plan-NEOFLUAR 40×/0.75 + Zeiss AxioCam ICc 5. Stacked using Helicon Focus.
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