| Scientific name |
Pachydiscus (Neodesmoceras) gracilis |
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| Author |
Matsumoto, 1979 |
| Reference |
Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 24, No. 2, p. 60, pl.10, fig. 1; pl. 12, Fig. 2 |
| Type specimen |
Holotype: GK. H5885 |
| Type locality |
Loc. H311a, Kiusu, Hobetsu Valley, Iburi Province, northern Hokkaido (142^09'17" E, 42^38'31" N) |
| Formation name |
Unit IVc5 = K6b2 (uppermost of the Fukaushi Formation), Hakobuchi Group |
| Age |
Maastrichtian, Upper Cretaceous |
| Remarks |
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