Dextradonator eximius (Grunow) Ross & Sims (1980)
Comment: Two cylindrical valves linked by massive polar elevations. Each sibling has a deep girdle element attached.
Locality: DODO dredging 123-D1 (Mascarene Ridge, Indian Ocean), The Natural History Museum slide BM 78349 (middle Eocene).
Photographed using: Zeiss Axioplan, Plan-NEOFLUAR 40×/0.75 + Zeiss AxioCam MRc. Stacked using Helicon Focus.
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