Trigonia sumiyagura Kobayashi & Kaseno
| 1959. | Trigonia sumiyagura Kobayashi & Kaseno Hayami, I. 1959c p. 65, pl. 5, fig. 22 |
| Condition: | Present |
| Taxonomy: | Mollusca: Bivalvia: Trigoniidae: |
| Geologic Time: | Mesozoic: |
| Hayami, I., 1959c: Bajocian pelecypods of the Aratozaki formation in northeast Japan. Studies on the Dogger pelecypods in Japan, 1. Japanese Journal of Geology and Geography, vol. 30, pp. 53–70, pl. 5. (Reference No. 0027) |
 PDF in prep. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 24. |
