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

Scientific name	Lytoceras ezoense
Author	Yabe, 1903
Reference	Jour. Coll. Sci., Imp. Univ. Tokyo, Vol. 18, No. 2, p. 9, pl. 1, fig. 1; pl. 5, fig. 1
Type specimen	Holotype: UMUT MM7476
Type locality	The Pombets River, a tributary of the Ikushumbets River, Mikasa City, Province of Sorachi, central Hokkaido
Formation name	Lower Ammonite beds (= Middle Yezo Group)
Age	Albian, Lower Cretaceous
Remarks	(= Ammonoceratites yezoense (Yabe, 1903) / Remarks: The generic position of this species was transferred to Ammonoeras Lamarck, 1822 by Shimizu (1931, p. 21). Later, Arkell et al. (1957) treated Ammonoceras as a junior synonym of Ammonoceratites, Rfinesque, 1815). Reference: Shimizu, S., 1931. Sci. Rep. Tohoku Imp. Univ., 2nd Ser., Vol. 15, No. 1, 1 - 40, pls. 1 - 4; Arkell, W. J. et al., 1957. Mesozoic Ammonoideal. L80 - L465. In: Treatise on Invertebrate Paleontology, Part L, Mollusca 4 (ed. Moore, R. C).