3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Pachydiscus yokoyamai | |
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| Author | Jimbo, 1894 | |
| Reference | Palaeont. Abhandl., N. F., Vol. 2, No. 3, p.177, pl. 2, fig.3, 3a | |
| Type specimen | Lectotype: UMUT MM7511 (= GT. I - 103) | |
| Type locality | Chupitaushunai, a left tributary of the Tonbetsu, Kitami Province, northern Hokkaido (ca. 142^11'E, 44^53'N) | |
| Formation name | Upper Yezo Group | |
| Age | Upper Campanian, Upper Cretaceous | |
| Remarks | (= Canadoceras yokoyamai (Jimbo, 1894)) [see printed matter] | |