Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan 139
URN
Fig. 25.
100,150.
Chuhsiungichthys japonicus sp. nov., caudal skeleton of the holotype, KMNH VP
origin is slightly before the anal origin. The length of the dorsal fin base is
contained 1.6 times in the anal fin base. The number of anal fin rays is 39. The
body depth is contained 2.4 to 2.5 times in the standard length.
Holotype. KMNH VP 100,150, a specimen with its right side exposed, but the
middle ofthe body and the dorsal partofthe head region are missing. Thestandard
length is 216.0 mm.
Paratype. KMNH VP 100,151, an almost complete specimen with its left side
exposed, but a part of the head region and the posterior part of the caudal fin are
missing. The standard length is 218.3 mm.
Locality. Kumagai (KD-34), Kokura-kita-ku (Kokura Northern Ward), Kitakyu
shu City, Fukuoka Prefecture, Japan.
Horizon. The Fourth Formation (the uppermost formation, W4, correlated to the
Upper Wakamiya Formation) ofthe Wakino Subgroup in the Kwanmon Group, the
Lower Cretaceous.
Etymology.
The species name,japonicus, meansJapan.