Sphenoceramus hetonaianus Matsumoto
| 2001. | Sphenoceramus hetonaianus Matsumoto Ando, H. et al. 2001 p. 148, pl. 2, fig. 9 |
| Condition: | Present |
| Taxonomy: | Mollusca: |
| Geologic Time: | Mesozoic: |
| Ando, H., Tomosugi, T. and Kanakubo, T., 2001: Upper Cretaceous to Paleocene Hakobuchi group, Nakatonbetsu area, northern Hokkaido — lithostratigraphy and megafossil biostratigraphy —. Journal of the Geological Society of Japan, vol. 107, no. 2, pp. 142–162, pls. 1–2. (in Japanese) (Reference No. 0718) |
 |
| Ito, Y. et al., 2008, no. 74, p. 4. |
