Australobuchia blanfordiana (Stoliczka, 1866)

Fuersich, Franz T., Alberti, Matthias, Pandey, Dhirendra K. & Ayoub-Hannaa, Wagih S., 2022, Jurassic bivalves from the Spiti area of the Himalayas, northern India, Zitteliana 96, pp. 153-178 : 153

Australobuchia blanfordiana (Stoliczka, 1866)

Plate 3, figs 4-5

1864 Monotis concentricus Blanford - Blanford: 136, pl. 4, figs 6-7.

non 1865 Monotis concentricus Blanford - Salter: 91, pl. 22, fig. 4.

*1866 Ancella [sic] Blanfordiana , Stol. - Stoliczkai: 88.

1913 Aucella blanfordiana , Stolczkai - Holdhaus: 412, pl. 98, figs 1-9.

1976 Buchia blanfordiana (Stoliczka) - Wen: 86, pl. 20, figs 1-6.

1976 Buchia blanfordiana (Stoliczka) - Gu et al. 150, pl. 46, figs 17-25.

1988 Buchia blanfordiana ( Stoliczka 1866) - Li and Grant-Mackie: 252, fig. 2J-K.

2005 Buchia blanfordiana (Stoliczka) - Xia and Bai: 502, pl. 1, figs 5, 7, 8.

Material.

One internal mould of a left valve from the middle? member close to the pass to Tashigeng (SNSB-BSPG 2020 XCIX 44); one right valve, two right valve internal moulds, five left valveinternal moulds, and one crushed articulated specimen from the upper member close to the pass to Demul (SNSB-BSPG 2020 XCIX 44-46).

Description and remarks.

The species differs from A. spitiensis in being less strongly oblique and less posteroventrally elongated. According to Holdhaus (1913, p. 413), the species is quite variable with respect to shape and ornamentation. Whether it is, in fact, conspecific with A. spitiensis cannot be evaluated with the present poorly preserved material.

Figures

Plate 3. (1, 2) Bositra buchii (Roemer, 1836). Composite moulds from the lower member at Langza. 1. a, articulated specimen in butterfly position, dorsal view (SNSB-BSPG 2020 XCIX 18 a); b, c, single valves, lateral view (SNSB-BSPG 2020 XCIX 18 b). 2. External mould of right valve (SNSB-BSPG 2020 XCIX 19). (3) Australobuchia spitiensis (Holdhaus, 1913). Composite mould of articulated specimen from the middle member, roadside close to Komic; right valve view (SNSB-BSPG 2020 XCIX 43). (4 - 5) Australobuchia blanfordiana (Stoliczka, 1866). upper member close to Demul Pass. 4. Right valve (SNSB-BSPG 2020 XCIX 46). 5. Right valve (SNSB-BSPG 2020 XCIX 45). (6 - 10)? Malayomaorica sp. upper member close to Demul Pass. 6. Left valve (SNSB-BSPG 2020 XCIX 51 a). 7. Right valve interior (SNSB-BSPG 2020 XCIX 52). 8. Fragment of right valve (SNSB-BSPG 2020 XCIX 51 b). 9. Left valve (SNSB-BSPG 2020 XCIX 51 c). 10. Fragment of right valve (SNSB-BSPG 2020 XCIX 51 d). (11) Entolium (Entolium) corneolum (Young & Bird, 1822). Internal mould of a left valve from the lower member at Langza (SNSB-BSPG 2020 XCIX 15). (12) Propeamussium (Propeamussium) sp. Internal mould of a small fragment from the lower member at Langza (SNSB-BSPG 2020 XCIX 12). a, natural size; b, enlarged. (13) Camptonectes (Camptochlamys) obscurus (J. Sowerby, 1818). Left valve interior from the lower member near the pass to Tashigeng (SNSB-BSPG 2020 XCIX 13).