Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan

Early Cretaceous Freshwater Fish Fauna in Kyushu, Japan 227
PREM
Fig.88. Paraleptolepis kikuchii gen. et sp. nov., head region of the holotype, KMNH VP
100,222.
There are 19 anal fin pterygiophores. The principal anal fin rays are preceded by
four small unbranched accessory rays. The numberof pectoral fin rays is 11. The
total number ofvertebrae is 40, with 20 caudal vertebrae. The number of ribs is 18.
There are three uroneurals extendingover the first preural centrum.
In KMNH VP 100,224, the first dorsal fin pterygiophore is above the neural
spine of the first caudal vertebra. The dorsal fin base is contained 1.5 times in the
anal fin base. The number of principal dorsal fin rays is 11. There are 12 dorsal
fin pterygiophores. There are 19 anal fin pterygiophores. The principal dorsal fin
rays are preceded by one small unbranched accessory rays. The principal anal fin
rays are preceded by three unbranched accessory rays. The number of pectoral fin
rays is 11. There are 18 principal caudal fin rays (1,8,8,1). The total number of
vertebrae is 40, with 20 caudal vertebrae. The number of ribs is 18.
In KMNH VP 100,225, the body depth is contained 3.7 times in the standard
length. The head length is contained 3.5 times in the standard length. The first
dorsal pterygiophore is above the neural spine of the second caudal vertebra. The
dorsal fin base is contained 1.6 times in the anal fin base. There are 12 dorsal fin
pterygiophores. The number of principal anal fin rays is 18. There are 19 anal fin
pterygiophores. The principal anal fin rays are preceded by four small unbranched
accessory rays. The total number of vertebrae is 40, with 19 caudal vertebrae. The
number of ribs is 19.
In KMNH VP 100,226, the first dorsal pterygiophore is above the neural spine
of the first caudal vertebra. The dorsal fin base is contained 1.6 times in the anal fin