Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

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218 Yoshitaka Yabumoto MAX DEN Fig. 80. Diplomystus sp., head region of KMNH VP 100,211. 10mm Fig. 81. Diplomystus sp., predorsal scutes of KMNH VP 100,211. length. The head length is contained 3.9 times in the standard length. The number of principal dorsal fin rays is 11. There are 11 dorsal fin pterygiophores. Seven predorsal scutes are visible. The number of ventral scutes is 20, with 11 scutes between the pectoral and pelvic fins, and 9 scutes between the pelvic and anal fins. The total number of vertebrae is 35, with 16 caudal vertebrae. The number of ribs is 17. In KMNH VP 100,213, the body depth is contained 3.2 times in the standard length. The head length is contained 3.8 times in the standard length. There are 10 dorsal fin pterygiophores. The number of principal anal fin rays is 22. There
Early Cretaceous Freshwater Fish Fauna in Kyushu,Japan 219 Fig. 82. Diplomystus sp., caudal skeleton of KMNH VP 100,211. are 23 anal fin pterygiophores. The number of ventral scutes is 19, with 4 scutes below the pectoral fin, 11 scutes between the pectoral and pelvic fins, and 8 scutes between the pelvic and anal fins. The total number of vertebrae is 35, with 16 caudal vertebrae. The number of ribs is 17. Seven median supraneurals are present. The first supraneural is wide and leaf-shape with a ridge running from the dorsal end to the ventral end. In KMNH VP 100,214, the body depth is contained 3.5 times in the standard length. The head length is contained 3.7 times in the standard length. The dorsal fin base is contained 1.8 times in the anal fin base. The number of principal dorsal fin rays is 11. There are 11 dorsal fin pterygiophores. The number of principal anal fin rays is 25. There are 25 anal fin pterygiophores. Five dorsal scutes are visible. The number of ventral scutes is 18, with 10 scutes between the pectoral and pelvic fins, and 8 scutes between the pelvic and anal fins. The total number of vertebrae is 34, with 16 caudal vertebrae. The number of ribs is 16. Seven median supraneurals are present. In KMNH VP 100,215, the body depth is contained 3.5 times in the standard length. The head length is contained 3.9 times in the standard length. The number of ventral scutes is 18, with 11 scutes between the pectoral and pelvic fins, and 7 scutes between the pelvic and anal fins. The total number of vertebrae is 34, with 16 caudal vertebrae. The number of ribs is 16. Six median supraneurals are present. The first preural centrum bears the plate like parhypural. The first hypural is the largest. The second hypural is about half of the first one in width. The second hypural is fused with the first ural vertebra.
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Bull. Kitakyushu Mus. Nat. Hist., 1
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Early Cretaceous Freshwater Fish Fa
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Fig. 10. Nipponamia satoi gen. et s
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Early Cretaceous Freshwater Fisli F
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Fig. 19. Chuhsiungichthys yanagidai
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40-42 2.9 Early Cretaceous Freshwat
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EarlyCretaceous Freshwater Fish Fau
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Fig. 37. Aokiichthys changae gen. e
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Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

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