Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

222 Yoshitaka Yabumoto
EPI-3
UN5.4
Fig. 84. Pachythrissops laevis Woodward, 1919, caudal skeleton. From Patterson and
Rosen, 1977.
Paraleptolepis kikuchii sp. nov.
(Figs. 86-89, PI. 57)
Diagnosis. It differs from other species of the genus in having the combination of
following characters. The body depth is contained 3.2 to 3.7 times in the standard
length. The head length is contained 3.5 to 4.3 times in the standard length. The
first dorsal fin pterygiophore is inserted between the neural spines of the first and
second caudal vertebrae or above the neural spine of the first caudal vertebra. The
pelvic fin is short and does not reach the pelvic insertion. The anterior three anal
pterygiophores are inserted between the haemal spines of the first and the second
caudal vertebrae. The number of vertebrae is 40 to 42, with 19 to 20 caudal
vertebrae. The number of ribs is 18 to 20.
Holotype. KMNH VP 100,222, an almost complete specimen, with its right side
exposed. The standard length is 55.5 mm.
Paratypes. KMNH VP 100,223, an almost complete specimen with its left side
exposed, but parts of dorsal and anal fins are missing. The standard length is 48.4
mm. KMNH VP 100,224, an almost complete specimen with its left side exposed,
but the head region is missing. The length between the pelvic insertion and the end
of the hypural is 36.8 mm. KMNH VP 100,225, an almost complete specimen with