3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan
| Scientific name | Pachydesmoceras pachydiscoide | |
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| Author | Matsumoto, 1954 | |
| Reference | Mem. Fac. Sci., Kyushu Univ., Ser. D (Geol.), Vol. 5, No. 2, p. 101, pl. 9, fig. 2a, b | |
| Type specimen | Holotype: UMUT MM6660 (= GT. I - 2805) | |
| Type locality | The Naibuchi Valley, Naibuchi (= Naiba) district, south Sakhalin, Russia | |
| Formation name | Miho Group | |
| Age | Middle part of Turonian to Coniacian, Upper Cretaceous | |
| Remarks | ||