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YABUMOTO, Y. & UYENO, T. (1994) (Meso Cénozoïque Japon).pdf


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Japanese Late Mesozoic and Cenozoic $shes

257

Striatolamia, Isurus, Lamna and Carcharodon
are found from the Kattachi Formation in Omuta
City in Fukuoka Prefecture. Three species of the
genus Carcharodon; C. auriculatus, C. angustidens and C. nodai, are recognized among the
fossils from the Kattachi Formation.
Oligocene elasmobranch fossils are reported
from the Lower Oligocene Iwaki Formation of the
Shiramizu Group in Iwaki City, Fukushima Prefecture and the Upper Oligocene Ashiya Group in
Kitakyushu City, Fukuoka Prefecture (Uyeno et al.
1984; Yabumoto 1987a; Suzuki 1991). The fossils
of the genus Hexunchus are abundant in both the
Iwaki Formation and the Ashiya Group. Carcharodon angustidens is recognized from the Ashiya
Group, but it is absent in the fossils of the Iwaki
Formation.

Table 9 Middle Miocene elasmobranchs from eastern Yamanashi Prefecture (Uyeno & Ono 1982). Locality no. 21 in
Fig. 1.

NEOGENE MARINE FISHES OF JAPAN (TABLES 8-21)

Chondrichthyes
Lamnidae
Isums sp.
Lamna sp.

There are many Neogene fish fossils recorded from
numerous localities. The main localities are shown
in Fig. 1, and the species lists are given in
Tables 8-20. Almost complete tooth sets of Carcharodon megalodon were discovered from Miocene sediments in Saitama and Gunma prefectures
(Goto et al. 1983; Uyeno et al. 1989). From
Pliocene sediments, a nearly complete tooth set of

Chondrichthyes
Lamnidae

Isurus hastalis (Agassiz)
Carcharodon sp.
Carcharhinidae

Hemipristis serra Agassiz
Carcharhinus sp. A
Carcharhinus sp. B
Carcharhinus sp. C
Carcharhinus sp. D
Negaprion sp.
Squatinidae

Squatina sp.
Table 10 Miocene elasmobranchs from the Tomikusa Group in
Nagano Prefecture (Hasegawa & Uyeno 1967). Locality no. 20
in Fig. 1.

Carcharodon megalodon (Agassiz)
Carcharodon sp.
Otodus sp.
Xiphodolamia? sp.
Carcharhinidae

Carcharhinus sp.
Galeocerdo aduncus Agassiz
Negaprion? sp.
Squalidae

Table 8 Miocene fishes from Chichibu Basin, Saitama, Japan
(Uyeno et al. 1983; Uyeno & Sakamoto 1985; Sakamoto &
Uyeno 1992). Locality no. 15 in Fig. 1.
Chondrichthyes
Hexanchidae
Hexanchus sp.
Odontaspididae
Odontaspis sp.
Cetorhinidae

Cetorhinus maximus (Gunnerus)
Lamnidae

Isurus hastalis (Agassiz)
Isurus desori (Sismonda)
Carcharodon megalodon (Agassiz)
Parotodus benedeni (Le Hon)
Carcharhinidae

Galeocerdo aduncus Agassiz
Carcharhinus sp.
Hemipristis serra Agassiz
Negapricm sp.
Squatinidae

Squalus sp.
Myliobatididae
Myliobatis sp.
Gen. & sp. indet. A
Gen. & sp. indet. B

Isurus hastalis was found in Chiba Prefecture
(Uyeno et al. 1990).
Records of teleostean fish fossils become abundant in Neogene sediments of Japan. Miocene deep
sea fishes are found from northern Honshu and
Chita Peninsula in Tokai district (Sato 1962, 1966,
1969). Shallow water fish fossils are found from
Miocene sediments of Tottori Prefecture (Uyeno &
Suda 1991; Yabumoto & Uyeno 1994). Abundant
Pleistocene marine fishes are found from Tanegashima Island in Kagoshima Prefecture (Yabumot0 & Uyeno 1990).

Squatina sp.
Osteichthyes
Scombridae

Scornbermorus sp.
Pleuronectidae

Suitamapsetta nomurai Sakamoto and Uyeno

LATE MESOZOIC AND CENOZOIC FRESHWATER FISH FOSSILS
IN JAPAN

Significant Cretaceous freshwater fish fossils were
discovered from the Wakino Subgroup of the