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«To cite this version: Aihua Yuan. Latest Permian Deep-Water Ostracod (Crustacea) Fauna from South China. Pa- leontology. Universit´ Pierre et Marie ...»

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Remarks: According to the sub-semicircular and preplete outline, narrow dorsal surface, obscure sub-central lobe, projecting cone-shaped posterior lobe and the narrow furrow between the two lobes, the present specimen is compared to Permokegelites beichuanensis Becker & Wang, 1992 from the Late Permian of Sichuan and Fujian Provinces, South China. The present specimen differs from the latter by the absence of delicate inner carina and the anterolaterally located vertical ridge and by possessing larger anterior node.

Occurrence: Latest Permian. Guangxi (bed LQ16, Dalong Formation of Liuqiao Section), South China.

–  –  –

2007 Kellettina aff. reticulata Kozur, 1991a; Yuan et al.: p. 173, pl.1, fig.7.

Occurrence: Latest Permian. Guangxi (bed 03DP2, Dalong Formation of Dongpan Section), South China.

–  –  –

Material: Two valves.

Measurements: (without the lobe) L=735-757µm, H=375-400µm, H/L=0.51-0.53.

Remarks: Kirkbyan pit is absent or not preserved in the present specimens, so they are assigned to the family Kellettinidae.

Occurrence: Latest Permian. Guangxi (bed LQ16, Dalong Formation of Liuqiao Section), South China.

–  –  –

Material: Two valves.

Measurements: L=650µm, H=350µm, H/L=0.54.

Remarks: According to the outline and papilliform on lateral surface and along margins, this specimen is compared to Roundyella labaensis wangi Kozur, 1985a from the Late Permian (early Dzhulfian) of the Bükk Mts., Hungary. Roundyella labaensis is distinguished with Roundyella papilliformis in having papillae along margins and longer papillae on lateral surface. I consider that the specimen figured and attributed to Roundyella papilliformis Wang 1978 in Yi (2004, p.558, tab.1, pl.2, fig.18) from the Late Changhsingian of Fujian, South China should be assigned to R. labaensis wangi by its projecting papillae along margins.

Occurrence: Latest Permian. Guangxi (beds LQ16 and LQ29, Dalong Formation of Liuqiao Section), South China.

–  –  –

1978 Sinocoelonella caperata gen. et sp.nov; Guan et al.: p.149, pl.37, fig.17, pl.38, fig.1.

1987 Cyathus caperata (Guan); Shi & Chen: p.32, pl.10, figs.10-18.

Material: One incomplete valve.

Measurements: L≈353µm, H=240µm, H/L≈0.68.

Remarks: This specimen is assigned to Cyathus caperata (Guan, 1978) from the Early Permian of Hunan, South China (Guan et al., 1978) and the Late Permian of Zhejiang, South China (Shi & Chen,

1987) by the convex DB and VB, concave ADB, slightly upwardly raised ACA and the striated lateral surface.

48 Yuan Aihua: Latest Permian Deep-Water Ostracod (Crustacea) Fauna from South China 2008/5 Occurrence: Permian. Guizhou (sample SW13-3, Linghao Formation of Shaiwa Section), Guangxi (Maokou Formation of Tieqiao Section), Hunan (Maokou Formation) and Zhejiang (Changxing Formation), South China.

–  –  –

2007 Macronotella ? sp.1; Yuan et al.: p. 173, pl.1, fig.8.

Occurrence: Latest Permian. Guangxi (bed 03DP10, Dalong Formation of Dongpan Section), South China.

–  –  –

2007 Macronotella ? sp.2; Yuan et al.: p. 173, pl.1, fig.9.

Occurrence: Early Carboniferous ? - latest Permian. Alberta, Canada ?; Guangxi (beds 03DP3 and 03DP5, Dalong Formation of Dongpan Section), South China.

–  –  –

2007 Libumella cf. kargalensis Rozhdestvenskaya, 1959; Yuan et al.: p. 173, pl.1, figs 13-14.

Occurrence: Latest Permian. Guangxi (bed 03DP3, Dalong Formation of Dongpan Section), South China.

–  –  –

2007 Permoyoungiella ? sp.1; Yuan et al.: p. 174, pl.1, figs 16-18.

Occurrence: Latest Permian. Guangxi (beds 03DP2-03DP5, Dalong Formation of Dongpan Section), South China.

–  –  –

2007 Paraparchites sp. 1; Yuan et al.: p. 174, pl.1, fig. 15.

50 Yuan Aihua: Latest Permian Deep-Water Ostracod (Crustacea) Fauna from South China 2008/5 Occurrence: Latest Permian. Guangxi (bed 03DP3, Dalong Formation of Dongpan Section), South China.

–  –  –

Material: One valve.

Measurements: L=234µm, H=177µm, H/L=0.76.

Remarks: According to the straight and long DB and the rim along free margins, this specimen is assigned to the order Palaeocopida. There is not other preserved feature for further determination.

Occurrence: Latest Permian. Guizhou (sample SW13-12, Linghao Formation of Shaiwa Section), South China.

–  –  –

1958 Bairdia altiarcus Chen (sp.nov.); Chen: p.223, pl.3, figs 21-23, pl.4, figs 11, 12.

non 1985b Cryptobairdia altiarca (Chen); Kozur: p.231, tab.II, pl.3, fig.1.

2002 Cryptobairdia altiarcus (Chen); Shi & Chen: p.69, pl.7, figs 1-12.

2008 Bairdia altiarcus Chen; Crasquin-Soleau et al.:pl.2, figs 5-6.

–  –  –

Occurrence: Permian. Jiangsu (Chihsia Formation of Longtan), Guangxi (Heshan Formation of Yishan, Heshan) and Guizhou (sample SW13-12, Linghao Formation of Shaiwa Section), South China; Sicily (Lercara Formation of Portella Rossa 1 Section), Italy.





–  –  –

1965 Bairdia anbeedei Belousova, sp.nov.; Belousova: p.258-259, pl.48, fig.2.

1985b Cryptobairdia anbeedei (Belousova); Kozur: pl.11, fig.6.

Material: One valve.

Measurements: L874µm, H=549µm, H/L0.63.

Remarks: In Belousova (1965), for the new established species Bairdia anbeedei, only the external view of a left valve and dorsal view of a carapace were presented. In Kozur (1985b), assigned to B.

anbeedei, only a left valve of the species was figured. It is not strict to present or assign a Bairdia specimen at specific level with only left valve. Here, for better comparison, the species Bairdia anbeedei is adopted with doubt.

Occurrence: Late Permian. Guangxi (bed LQ16, Dalong Formation of Liuqiao Section), South China;

Bükk Mts., Hungary; Dzhulfa, Iran.

–  –  –

2007 Bairdia dongpanensis Yuan & Crasquin-Soleau n.sp.; Yuan et al.: p.174-176, pl.2, figs 7-12.

Occurrence: Latest Permian. Guangxi (beds 03DP2-03DP5, Dalong Formation of Dongpan Section;

beds LQ3, LQ5, LQ7 and LQ16, Dalong Formation of Liuqiao Section) and Guizhou (sample SW13-12, Linghao Formation of Shaiwa Section), South China.

–  –  –

1975 Bairdia sp.1; Gründel & Kozur: p.41, pl.2, figs 2-5.

1987 Bairdia sp.1 sensu Gründel & Kozur 1975; Bless: fig.6-J.

52 Yuan Aihua: Latest Permian Deep-Water Ostracod (Crustacea) Fauna from South China 2008/5 Material: One valve.

Measurements: L908µm, H=551µm, H/L0.61.

Occurrence: Permian. Timor (Kekneno series of Moetis region), Indonesia; Guangxi (bed LQ3, Dalong Formation of Liuqiao Section), South China.

–  –  –

1987 Bairdia ? sp. 6; Bless: 9, fig. 6C.

2007 Bairdia ? sp.6 sensu Bless, 1987; Yuan et al.: p.174, pl.2, figs 4-6.

2008 Bairdia ? sp. 6 sensu Bless; Crasquin-Soleau et al.: pl. 2, fig. 16.

Occurrence: Permian. Timor, Indonesia; Sicily (Lercara Formation of Portella Rossa 1 Section), Italy and Guangxi (beds 03DP2-03DP5, Dalong Formation of Dongpan Section), South China.

–  –  –

2007 Bairdia aff. birinae Egorov, 1953; Yuan et al.: p.174, pl.2, fig.2.

Occurrence: Latest Permian. Guangxi (bed 03DP3, Dalong Formation of Dongpan Section), South China.

–  –  –

Material: One carapace.

Measurements: L=800µm, H=500µm, H/L=0.63.

Remarks: The specimen of Cryptobairdia altiarcus (Chen) figured in Kozur (1985b, pl.3, fig.1) from the Middle Permian of Bükk Mts., Hungary, having distinct overlap along AVB and PVB. It is not coincident with the diagnosis of species Bairdia altiarcus Chen 1958, is proposed here to assign to other species. The present carapace here is not well preserved and is compared with the species B. altiarcus Chen, 1958 Occurrence: Latest Permian. Guangxi (bed LQ9, Dalong Formation of Liuqiao Section), South China.

53 2008/5 PhD dissertation of University of Pierre Marie Curie & China University of Geosciences (Wuhan)

–  –  –

1975 Bairdia cf. austriaca (Kollmann 1963); Gründel & Kozur: p.41, pl.2, figs 7, 8.

2008 Bairdia cf. austriaca (Kollmann, 1963) sensu Gründel & Kozur, 1975; Crasquin-Soleau et al.:

pl.2, figs 7-8.

Material: Two valves.

Measurements: (one specimen measured) L=786µm, H=400µm, H/L=0.51.

Remarks: As the specimens from the Early Permian of Timor, Indonesia (Gründel & Kozur, 1975), the specimens here have not the venterolateral ridge which is one of the two generic characters for Urobairdia Kollmann 1963.

Occurrence: Permian. Timor (Kekneno series of Moetis region), Indonesia; Sicily (Lercara Formation of Portella Rossa 1 Section), Italy; Guangxi (beds LQ3 and LQ16, Dalong Formation of Liuqiao Section), South China.

Bairdia cf. szaszi Crasquin-Soleau & Gradinaru, 1996 Pl. 3, fig. 13 Material: Nine valves.

Measurements: (one specimen measured) L=709µm, H=273µm, H/L=0.38.

Remarks: Compared with Bairdia szaszi Crasquin-Soleau & Gradinaru, 1996 from the early Middle Triassic (Lower Anisian) of Romania (Crasquin-Soleau & Gradinaru, 1996, pl.2, fig.9), the PDB of the present specimens is not so concave. In Crasquin & Gradinaru (1996), Praemacrocypris sp. sensu Mirauta et al. (1993) was attributed to the synonymy with doubt. Here, I consider that the specimens in Mirauta et al. (1993, pl.2, figs 12a,b), which have more elongated carapace, straight PDB and more tapering PB with very low location of maximum curvature, should be excluded from the species B.

szaszi.

Occurrence: Latest Permian. Anhui (sample CH 6-3-1, Dalong Formation of Chaohu Section), South China.

–  –  –

2007 Bairdia sp.1; Yuan et al.: p.176, pl.2, fig.13.

Occurrence: Latest Permian. Guangxi (bed 03DP3, Dalong Formation of Dongpan Section), South China.

–  –  –

2007 Bairdia sp.2; Yuan et al.: p.176, pl.2, fig.14.

Occurrence: Latest Permian. Guangxi (bed 03DP3, Dalong Formation of Dongpan Section), South China.

–  –  –

2007 Bairdia sp.3; Yuan et al.: p.176, pl.2, fig.3.

Occurrence: Latest Permian. Guangxi (bed 03DP3, Dalong Formation of Dongpan Section), South China.

–  –  –

2007 Bairdia sp.4; Yuan et al.: p.176, pl.2, fig.1.

Occurrence: Latest Permian. Guangxi (bed 03DP3, Dalong Formation of Dongpan Section), South China.

–  –  –

Remarks: The present specimen is characterized by its long, acute and posteriorly pointed beak.

Occurrence: Latest Permian. Guangxi (bed LQ3, Dalong Formation of Liuqiao Section), South China.

–  –  –

Material: Two valves.

Measurements: L=795-990µm, H=420-495µm, H/L=0.50-0.53.

Remarks: The specimens are similar to Bairdia (Bairdia) sp., group hypsela Rome, 1971 from the Devonian-Carboniferous strata of Middle-Western Europe and North Africa (Becker, 1987, 1999;

Becker et al., 1993) by the sub-rhombic lateral outline, broadly arched DB, slightly concave VB and high and obtuse anterior beak with a sharp angle (about 120º) at the junction of AB and ADB. However, the present specimens have higher and more obtuse posterior beak and only the left valves were found.

The overlap would not be observable. It does not permit making further determination at specific level.

Occurrence: Latest Permian. Guangxi (bed LQ16, Dalong Formation of Liuqiao Section), South China.

–  –  –

Material: One valve.

Measurements: L=780µm, H=315µm, H/L=0.40.

Occurrence: Latest Permian. Guangxi (bed LQ16, Dalong Formation of Liuqiao Section), South China.

–  –  –

Material: Two valves.

Measurements: L=260µm, H=139µm, H/L=0.53.

Remarks: These specimens have long and straight DB posteriorly inclined at about 30º, straight VB and slightly flattened AB and PB. The maximum curvature of AB is situated higher than mid-height.

PB is obtuse with a very low location at about 1/8 of the maximum height.

56 Yuan Aihua: Latest Permian Deep-Water Ostracod (Crustacea) Fauna from South China 2008/5 Occurrence: Latest Permian. Guangxi (beds LQ3 and LQ45, Dalong Formation of Liuqiao Section), South China.

–  –  –

Material: One carapace and two valves.

Measurements: L=247µm, H=174µm, H/L=0.7.

Remarks: The specimens have the similar overlap along whole margins as Bairdia portellaensis Crasquin-Soleau from the Middle-Late Permian of Sicily, Italy (Crasquin-Soleau et al., 2008), but differ from the latter by larger H/L, nearly straight VB and having the maximum height near the mid-length.

Occurrence: Latest Permian. Guizhou (sample SW13-12, Linghao Formation of Shaiwa Section), South China.

Bairdia sp.10 Pl.4, fig. 10

Material: One valve.

Measurements: L=275µm, H=183µm, H/L=0.67.

Remarks: This specimen is distinguished with Bairdia sp.9 by the higher location of maximum curvature of AB and the maximum height in front of mid-length.

Occurrence: Latest Permian. Guizhou (sample SW13-12, Linghao Formation of Shaiwa Section), South China.

Bairdia sp.11 Pl. 4, figs 11, 12

Material: Two valves.

Measurements: L=250-280µm, H=183-200µm, H/L=0.71-0.73.

Remarks: Only with the left valves, it is difficult to make assignation at specific level.

Occurrence: Latest Permian. Guizhou (sample SW13-12, Linghao Formation of Shaiwa Section), South China.

–  –  –

Material: One incomplete valve.

Remarks: According to the upward beak, this specimen is assigned to the genus Bairdia. However, the poor preservation does not allow further identification.

Occurrence: Latest Permian. Guizhou (sample SW13-3, Linghao Formation of Shaiwa Section), South China.



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