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UMUT CM 22057

Paleontology Collections

Turritella importuna Yokoyama, 1924

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Citation
1960.

Turritella importuna Yokoyama, 1924 Syntype

Oyama, K. et al. 1960 p. 38, pl. 3, fig. 7a

1957.

Turritella importuna Yokoyama Syntype

Makiyama, J. 1957 pl. 11, fig. 6

1924.

Turritella importuna Yokoyama, 1924 Syntype

Yokoyama, M. 1924b p. 10, pl. 1, fig. 6

Condition: Missing
Taxonomy:Mollusca: Gastropoda: Turritellidae:
Geologic Time:Cenozoic: Oligocene:
Horizon:Shiramizu group: Asagai formation:
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)
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., 1924b: Molluscan remains from the lowest part of the Jo-ban coal-field. Journal of the College of Science, Imperial University of Tokyo, vol. 45, art. 3, pp. 1–22, pls. 1–5. (Reference No. 0472)
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UMUT Material Reports: Citation
Ichikawa, T., 1983, no. 9, p. 156. 
Ichikawa, T., 1983, no. 9, p. 40. 
Ichikawa, T., 1983, no. 9, p. 302. 

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Yokoyama, M., 1924b:
(Reference No. 0472)
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Yokoyama, M., 1924b:
(Reference No. 0472)
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