Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

More documents

Recommendations

Info

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
Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan 223 so: Fig. 85. Pachythrissops laevis Woodward, 1919, Cranium in left lateral view. From Forey, 1973. its right side exposed. The standard length is 23.8 mm. KMNH VP 100,226, an almost complete specimen with its right side exposed, but the anterior part of the head region is missing. The length from the pectoral insertion to the end of the hypural is 18.2 mm. Locality. Minamigaoka (KM-1), Kokura-kita-ku (Kokura Northern Ward), Kita kyushu City, Fukuoka Prefecture,Japan. Horizon. The Third Formation (the upper formation, W3, correlated to the Lower Wakamiya Formation) of the Wakino Subgroup in the Kwanmon Group, the Lower Cretaceous. Etymology. The species is named for Mr. Naoki, Kikuchi, who collected and do nated the specimens to the Kitakyushu Museum and Institute of Natural History. Description of the holotype. The body is moderate and the depth is contained 3.2 times in the standard length. The head length is contained 4.0 times in the standard length. The snout is rounded. The outline ofthe head dorsal margin is convex. The outline from the occipital region to the dorsal origin is slightly convex. The restored outline of the abdomen is convex, and runs little under the lower end ofeach rib. The median fins
Page 1 and 2:
Bull. Kitakyushu Mus. Nat. Hist., 1
Page 3 and 4:
Early Cretaceous Freshwater Fish Fa
Page 5 and 6:
Page 9 and 10:
Page 11 and 12:
Page 13 and 14:
Page 15 and 16:
Page 17 and 18:
Page 19 and 20:
Page 21 and 22:
Fig. 10. Nipponamia satoi gen. et s
Page 23 and 24:
Early Cretaceous Freshwater Fisli F
Page 25 and 26:
Page 27 and 28:
Page 29 and 30:
Fig. 19. Chuhsiungichthys yanagidai
Page 31 and 32:
Page 33 and 34:
40-42 2.9 Early Cretaceous Freshwat
Page 35 and 36:
Page 37 and 38:
Page 39 and 40:
Page 41 and 42:
EarlyCretaceous Freshwater Fish Fau
Page 43 and 44:
Page 45 and 46:
Page 47 and 48:
Page 49 and 50:
Page 51 and 52:
Page 53 and 54:
Fig. 37. Aokiichthys changae gen. e
Page 55 and 56:
Page 57 and 58:
Page 59 and 60:
Page 61 and 62:
Page 63 and 64:
Page 65 and 66:
Page 67 and 68: Early Cretaceous Freshwater Fish Fa
Page 69 and 70: EarlyCretaceous Freshwater Fish Fau
Page 79 and 80: 10mm Fig. 52. Wakinoichthys aokii g
Page 89 and 90: Fig. 61. Wakinoichthys robustus gen
Page 113 and 114: Fig. 79. Diplomystus sp., restorati
Page 117: Early Cretaceous Freshwater Fish Fa
Page 154 and 155: Yabumoto, Y. Early Cretaceous Fresh
Page 156 and 157: • Yabumoto, Y. Early Cretaceous F
Page 158 and 159: J. Yabumoto, Y. Early Cretaceous Fr
Page 168 and 169:
Yabumoto, Y. Early Cretaceous Fresh
Page 170 and 171:
Page 172 and 173:
Page 174 and 175:
Page 176 and 177:
Page 178 and 179:
Page 180 and 181:
Page 182 and 183:
Page 184 and 185:
Page 186 and 187:
Page 188 and 189:
Page 190 and 191:
Page 192 and 193:
Page 194 and 195:
Page 196 and 197:
Page 198 and 199:
Page 200:
show all

Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

You also want an ePaper? Increase the reach of your titles

Delete template?

Save as template?