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Ashiya G.
Oligocene, Ainoshima, Kitakyusyu-shi, Japan
ver. 2.4
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Hexanchus griseus (BONNATERRE, 1788)/ H. nakamurai TENG, 1962


Unknown: a; top view, b; labial view

Squalus sp.


Squatina sp.


Heterodontus sp. Ashiya type


Carcharias acutissima (AGASSIZ, 1844)


Isurus praecursor (LERICHE, 1905)

21 mm H, 19 mm H. 11 mm H
Isurus hastalis (AGASSIZ, 1843)


a-b; Alopias latidens (LERICHE, 1909), c; Alopias sp.


Hemitriakis sp./ H. japanica (MÜLLER et HENLE, 1839)

4.5 mm W
Hemigaleus sp.

7.3 mm W
Hemipristis serra AGASSIZ, 1843/ H. curvatus DAMES, 1883


Carcharhinus brachyurus (GÜNTHER,1870), C. amboinensis (MÜLLER et HENLE, 1839), C. amboinensis, C. macloti (MÜLLER et HENLE , 1839)


Galeocerdo sp.

10 mm W
Negaprion acutidens (RÜPPELL, 1837)


Sphyrna sp.

9.5 mm W, 8 mm W
Isogomphodon sp.


Unknown


ver. 1.0, 20030222

Percentages of the carcharhinids in the assemblage

Species %
1 Isogomphodon sp. 18.3
2 Negaprion cfr. acutidens 17.0
3 Gen. et sp. indet. 15.4
4 Carcharias acutissima 11.8
5 Hexanchus griseus/nakamurai 7.9
6 Heterodontus sp. Ashiya type 6.9
7 Squatina sp. 6.2
8 Squalus sp. 4.6
9 Carcharhinus spp. 3.9
10 Hemipristis serra /curvatus 1.3
11 Isurus sp. (I. praecursor) 2.3
12 Isurus hastalis 1.3
13 Alopias latidens 1
14 Triakid / Hemigaleid < 1
15 Sphyrna sp. < 1
16 Galeocerdo sp. < 1
Carcharhinidae

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Fumio Nakagawa


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