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

Scientific name	Helicoceras scalare
Author	Yabe, 1904
Reference	Jour. Coll. Sci., Imp. Univ., Tokyo, Vol. 20, No. 2, p. 9, pl. 3, fig. 2.
Type specimen	Holotype: UMUT MM7549a (= GT. I - 233)
Type locality	Opiraushibets (=Obirashibe River), Tappu area, Obira Town, Rumoi Province, northwestern Hokkaido
Formation name	Scaphites - beds (=Middle Yezo Group)
Age	Senonian (Turonian), Upper Cretaceous
Remarks	(= Scalarites scalaris (Yabe, 1904)) / Remarks: The generic position of this species was transferred to Polyptychoceras by Wright and Matsumoto (1954, p. 117). / Reference: Wright, C. W. and Matsumoto, T., 1954. Mem. Fac. Sci., Kyushu Univ., Ser. D, Vol. 4, No. 2, 107 - 134, pls. 7 - 8.