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UMUT CM 24591

Paleontology Collections

Portlandia ( Megayoldia ) gratiosa (Yokoyama)

Citation
1957.

Portlandia (Megayoldia) gratiosa (Yokoyama) Syntype

Makiyama, J. 1957 pl. 6, fig. 5a, b

1923.

Yoldia gratiosa Yokoyama, 1923 Syntype

Yokoyama, M. 1923c p. 8, pl. 2, fig. 5

Condition: Missing
Taxonomy:Mollusca: Bivalvia: Yoldiidae:
Geologic Time:Cenozoic:
Reference
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)
Yokoyama, M., 1923c: On some fossil Mollusca from the Neogene of Izumo. Japanese Journal of Geology and Geography, vol. 2, no. 1, pp. 1–9, pls. 1–2. (Reference No. 0469)
UMUT Material Reports: Citation
Ichikawa, T., 1983, no. 9, p. 45. 
Ichikawa, T., 1983, no. 9, p. 293.