Venericardia ( Cyclocardia ) orbica Yokoyama, 1925
| 1960. | Venericardia (Cyclocardia) orbica Yokoyama, 1925 Holotype Oyama, K. et al. 1960 p. 150, pl. 44, fig. 5 |
| 1957. | Cyclocardia orbica (Yokoyama) Holotype Makiyama, J. 1957 pl. 22, fig. 10 |
| 1925. | Venericardia orbica Yokoyama, 1925 Holotype Yokoyama, M. 1925b p. 8, pl. 1, fig. 10 |
| Condition: | Missing |
| Taxonomy: | Mollusca: Bivalvia: Carditidae: |
| Geologic Time: | Cenozoic: Oligocene? - Miocene: |
| Horizon: | Yunagaya group: Kaneoo formation: |
| Makiyama, J., 1957: Matajiro Yokoyama's Tertiary fossils from various localities in Japan. Part 1. Palaeontological Society of Japan, Special Papers, no. 3, pp. 1–4, pls. 1–24. (Reference No. 0367) |
| Oyama, K., Mizuno, A. and Sakamoto, T., 1960: Illustrated handbook of Japanese Paleogene molluscs., pp. 1–244, pls. 1–71. Geological Survey of Japan. (Reference No. 0412) |
| Yokoyama, M., 1925b: Molluscan remains from the middle part of the Jo-ban coal-field. Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 7, pp. 1–23, pls. 1–3. (Reference No. 0474) |
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| Ichikawa, T., 1983, no. 9, p. 158. |
| Ichikawa, T., 1983, no. 9, p. 43. |
| Ichikawa, T., 1983, no. 9, p. 310. |
