Trigonia sumiyagura Kobayashi & Kaseno
| 1975. | Trigonia sumiyagura Kobayashi & Kaseno Holotype Hayami, I. 1975 p. 102, pl. 5, fig. 1 |
| 1966. | Trigonia sumiyagura Kobayashi & Kaseno Holotype Masutomi, K. & Hamada, T. 1966 p. 86, pl. 43, fig. 3 |
| 1947. | Trigonia (Lyriodon) sumiyagura Kobayashi & Kaseno Holotype Kobayashi, T. & Kaseno, Y. 1947 p. 42, pl. 10, figs. 1a, b, 2a, b |
| Condition: | Present |
| Taxonomy: | Mollusca: Bivalvia: |
| Geologic Time: | Mesozoic: |
| Hayami, I., 1975: A systematic survey of the Mesozoic Bivalvia from Japan. The University Museum, The University of Tokyo, Bulletin, no. 10, pp. i–vi + 1–249, pls. 1–10. (Reference No. 0042) |
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| Kobayashi, T. and Kaseno, Y., 1947: A new Liassic species of Trigonia s. str. (i. e. Lyriodon) from the Kitakami mountains, Nippon. Japanese Journal of Geology and Geography, vol. 20, nos. 2–4, pp. 41–43, pl. 10. (Reference No. 0191) |
 PDF in prep. |
| Masutomi, K. and Hamada, T., 1966: Fossils in colour., pp. i–x + 1–268, pls. 1–96. Hoikusha Publishing Co., Ltd., Osaka. (in Japanese) (Reference No. 0576) |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 38. |
| Ichikawa, T., 1988, no. 15, p. 94. |
| Ichikawa, T. and Hayami, I., 1978, no. 2, p. 188. |
