Gladius antiquus Forti & Schulz (1932)
Comment: This valve is visible in girdle view. Despite its unusual height, it is incomplete: the basal part of the mantle is broken.
Locality:
Ocean Drilling Program Hole 693B (Weddell Sea, south Atlantic), sample: 113-693B-19X-4, 77-78 cm (Early 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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