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Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

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<strong>Early</strong> <strong>Cretaceous</strong> <strong>Freshwater</strong> <strong>Fish</strong> <strong>Fauna</strong> <strong>in</strong> <strong>Kyushu</strong>, <strong>Japan</strong> 189<br />

SAG<br />

FRO<br />

PARA<br />

DEN<br />

Fig. 58.<br />

100,184.<br />

Wak<strong>in</strong>oichthys aokii gen. et sp. nov., head region of the specimen, KMNH VP<br />

URN<br />

U1<br />

PU1<br />

Fig. 59.<br />

100,184.<br />

Wak<strong>in</strong>oichthys aokii gen. et sp. nov., caudal region of the specimen, KMNH VP<br />

and the seventh caudal vertebra. The dorsal f<strong>in</strong> base is conta<strong>in</strong>ed 1.9 times <strong>in</strong> the<br />

anal f<strong>in</strong> base. The number of pr<strong>in</strong>cipal dorsal f<strong>in</strong> rays is 11. There are 11 dorsal<br />

f<strong>in</strong> pterygiophores. The number of pr<strong>in</strong>cipal anal f<strong>in</strong> rays is 18. There are 18 anal<br />

f<strong>in</strong> pterygiophores. The pr<strong>in</strong>cipal dorsal and anal f<strong>in</strong> rays are preceded by two small<br />

unbranched accessory rays respectively. Eleven pectoral f<strong>in</strong> rays are visible. Six<br />

pelvic f<strong>in</strong> rays are visible. The total number of vertebrae is 47, with 22 caudal

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