Coscinodiscus rhombicus Castracane (1886)
Comment: Small valve with parts of the margin missing. Note that this species was first described as a member of the genus Coscinodiscus, but obviously belongs elsewhere.
Locality: Ocean Drilling Program Hole 959A (Côte d'Ivoire-Ghana Marginal Ridge, eastern tropical Atlantic), sample: 159-959A-37X-1, 61-63 cm (early Miocene).
Photographed using: Zeiss Axio.A1, Plan-APOCHROMAT 100×/1.4 Oil DIC + Zeiss AxioCam ICc 5. Stacked using Helicon Focus.
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