Bairdia deweveri Crasquin, 2010

Chitnarin, Anisong, Crasquin, Sylvie, Forel, Marie-Béatrice & Tepnarong, Prachya, 2017, Ostracods (Crustacea) of the Early-Middle Permian (Cisarulian-Guadalupian) from Central Thailand (Indochina Block): Part II, Orders Podocopida, Platycopida and Myodocopida, Geodiversitas 39 (4), pp. 651-690 : 666

Bairdia deweveri Crasquin, 2010

( Fig. 12 A-C)

Bairdia deweveri Crasquin in Crasquin, Forel, Feng, Yuan, Baudin & Collin et al. 2010a: 342, figs 7O-T.

Bairdia cf. trianguliformis Chen in Shi & Chen, 1987: 37, pl. 2, figs 1-8.

Bairdia galei Croneis & Thurman, 1939: 325 , pl. 7, fig. 21. — Shi & Chen 1987: 37, pl. 1, figs 19-22. — Crasquin et al. 2008b: pl. 2, figs 11, 12.

MATERIAL EXAMINED. — Ten complete carapaces.

OCCURRENCES. — Bulla section, Dolomites, Italy, Bulla Member, Bellerophon Formation , Changxingian ( Crasquin et al. 2008b) ; Meishan section, Changxing Formation, Baoqing and Meishan Members ( Shi & Chen 1987) ; sample 08LO02-10, Tham Nam Maholan section, Nam Maholan Formation, Loei Province, northeastern Thailand, Early Permian ; samples 07 PB04-2 and 07 PB04-5 , Nong Phai section, Pha Nok Khao Formation, Phetchabun Province, central Thailand, Early Permian .

DIMENSIONS. — H = 0.280 -0.594 mm, L = 0.532 -1.150 mm, H/L = 0.48-0.52.

REMARKS

The specimens are attributed to Bairdia deweveri Crasquin, 2010 described from the Late Permian of Italy, and South China (see synonymy) due to the angular dorsal outline of both valves, and AB angular, pointing upward and located almost as high as DB. PB is tapering and located very low, nearly at VB.

Figures

FIG. 12. — Ostracods from Indochina Block,Central Thailand.All specimens are stored at the Suranaree University of Technology Collections (Nakhon Ratchasima, Thailand) numbers SUT-09-xxxx.All the specimens are represented by complete carapaces.A-C, Bairdia deweveri Crasquin, 2010; A, right lateral view, SUT-09- 2165, sample 07PB04-2; B, right lateral view, SUT-09-2161, sample 07PB04-2; C, right lateral view, SUT-09-2169, sample 08LO02-10; D-F, Bairdia menardensis Harlton sensu Chen (1958); D, right lateral view, SUT-09-2140, sample 07LB05-B1; E, right lateral view, SUT-09-2147, sample 07LB05-D3; F, right lateral view, SUT-09-2148, sample 08LB01-6; G-I, Lobobairdia ventriconcava (Chen, 1958); G, right lateral view, SUT-09-2539, sample 07PB05-2; H, right lateral view, SUT- 09-2540, sample 07PB05-2; I, left lateral view, SUT-09-2541, sample 07PB07-3; J-P, Petasobairdia campbelli Chitnarin, n. sp.; J, holotype, right lateral view, SUT-09-2568, sample 07LB05-5; K, paratype,left lateral view, SUT-09-2571,sample 07LB05-5; L, dorsal view, SUT-09-2572, sample 07LB05-5; M, ventral view, SUT-09-2573, sample 07LB05-5; N, paratype, right lateral view, SUT-09-2570, sample 07LB05-5; O, left lateral view, SUT-09-2574, sample 07PB05-5; P, left lateral view, SUT-09-2575, sample 07PB05-5. Scale bars: 100 µm.