3D digital model database TYPE SPECIMENS of Cretaceous ammonoid in Japan

Scientific name	Holcodiscus kotoi
Author	Jimbo, 1894
Reference	Palaeont. Abh., N. F., Vol. 2, No. 3, p. 179, pl. 5, fig. 2,2a
Type specimen	Holotype: UMUT MM7517 (= GT. I - 107)
Type locality	The Obirashibe River, about 60 km from its mouth, Rumoi Province, northwestern Hokkaido
Formation name	Upper Yezo Group
Age	Upper Turonian - Coniacian, Upper Cretaceous
Remarks	(= Yokoyamaoceras kotoi (Jimbo, 1894)) / Remarks: The generic position of this species was transferred to Yokoyamaoceras by Wright and Matsumoto (1954, p. 128). / Reference: Wright, C. W. and Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 4, No. 2, 107 - 134, pls. 7 - 8. [see printed matter]