Biostratigraphy of the Akiyoshi Limestone Group,

Table 7. Representative fusuhnaceans in the proposed zones and the thickness of each zone measured along the
surveyed traverses.
Representative fusuhnaceans of each zone in the Jigoku-dani area Thickness
9. Pseudofusulina aff. ambigua Zone (766-788)
Ji Route 1 Ji Route 3 JI Route 3 Ji Route 4 Ji Route 6
Pseudofusulina aff. amd&ua[766(16)], Psf. cf. vulgaris b.b.[766(6)]. 42+m,
83m,
(736-766)
17m,
(729-736)
11m,
(723-729)
8. Pseudofusulina vulgaris globosa Zone
Pseudofusulina vulgarisglobosa [738d>2, 755(l)-3, 763(2>-3],
Paraschwagerina spp.[786(2), 756(2), 756(8). 759(1)-1].
7. Pseudoschuagerlna muongthensis Zone
StaffeUamoelleri,Schubertettakingi, SchwagerinaokafuJiiT.S12o.-2], S. primigena[313f\, S. cf. prtncefw[312fj,
5. sp. A[3S2(2e>7], S. sp. B[S32D2], S. sp. C[311a, 317D],5. sp. D[382b-1], S. (7)aff. Au«fc«ft«wfa[S08c-l),
PseudoschwagerlnamuongthensisVlSUli-l, 332(la)-3], Ps. sp.[729(1)1. Ps. (7) sp.[800d-b].
6. Schwagerina () of. satoi Zone
Ozawainella off. magna, NankineUa sp. A Sehubertella lata, Triticites hayderuT379d], 7. michiae[379p],
7. cf. o6ai[S78d-2], 7. cf. pseudosimplex[311 B.-2, 725(1)], 7. aff. stoyrf«:[379c-l], 7. aff. ai»uAii[37Sa-l],
Schwagerina cf. «to&ais[836a-2,S86e, 336d], S. ()cf. «atoi[387d2], "Pseudofusulina "cf. oacca[336b-3],
'Psf.' aff. /iwfbnni»[8791-2] Psf. () sp. A[360a, 387c-A 723], Rwosofu3ulinaarclicalS4Ba-l, 354a-2].
5. Triticites yayamadakensis Zone
5-8. Triticites oiconlcus subzone
Quasifusullna sp. B[890c-1, 614(1)],Triticites biconicw>[392b-l, 392b-2], 7. cf. iso«nji5[608d],
7. AuroJu>a*/uM392a-2], 7. yayamadakensis [392a-3. S92A-1. 605b-ll.
5-2. Schwagerina sp. A snbxono
Triticites biconicus,7. aff. simp/«x(586d], 7. su«u&f[581c-3], 7. yayamadakensislBSl}),
Schwagerina sp. A[578(6). 586b-2, 586i-l], 5. sp. B.
5-1. Triticites saurinl subzone
Triticites cf. oonus[569k], 7. hidensisl421e.-l), 7. mfcAtae[694-(4)], 7. 8auniuT403a-3, 403b, 429a, 429b,
433a-l], 7. aff. simplex, T. yayamadakensis[489b, 569d], 7. yayamadakensis evectus [694(18), 569'(1), 686(1),
687(b)-l].
4. Montiparus sp. A Zone
Quasifusulinalongissima[675(2), 675(4>2], Quasifusulina sp. A(675(3)], Montiparussp. A[663(l), 676(1), 679(1)],
M () sp. A[464a. 554(1)]. Triticiteshidensis. 7. cf. otai. 7. saurtro[673(8)l.
3. ObeoUtee obsoletus Zone
3-2. Protriticites matsumotoi subzone
Obsoletes obsoletus[469a7, 637(b)], Protriticites matsumotoli4S9c, 538a, 634(1)], Pwt yano£Wai[540a],
Quasifusulinoides () sp. [639(1)1.
3-1. Profrtficltee toriyamal subzone
Obsoletes obsoletus[4Tla, 532a. 633-1], Protriticites masamichUlBWa), Prot loriyamai [468c].
2. Fusulina of. shikokuensis Zone
2-2. Pseudofusulinella hidaensis subzone
Pseudofusulinella fcdae/w»[492(2)-2, 517a. 517b], Fusulina ct.shikokuensis[492&-l, 492b].
2-1. Fusulinella of. ofreso subzone
Fusulina ct. shikokuensts[62U2)],
Fusulinella cf. ©4e*a[465a, 467a].
2. Fusulinella biconica Zone
Fusulinella biconica[461a, 618a-l].
32+m,
(332-300)
76m,
(387-332)
15m,
(392-387) 32+m,
109m,
(439-392)
34m,
(454-439)
9m,
(454-477)
2m
(481-477)
2+m,
(462-461)
8m,
(465-468)
44+m,
(489-507)
(605-616)
43m,
(578-605)
15m,
(569-578)
20m,
(554-569)
31m,
(538-554)
63m,
(520-538)
2m,
(517-520)
72m,
(686-723)
24m,
(663-686)
14m,
(634-663)
lm,
(633-634)