Cryptobairdia, Sohn, 1960

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 : 670

Cryptobairdia sp.

( Figs 15G ; 16 G-I)

MATERIAL EXAMINED. — Four complete and three incomplete carapaces

OCCURRENCES. — Samples 08LO07-1 and 08LO07-10, Sak Chai Quarry section, Pha Nok Khao Formation , Chaiyaphum Province, northeastern Thailand, Early Permian ; sample 07LB05-2, Ta Kli section, Tak Fa Formation, Nakhon Sawan Province, central Thailand, Early Permian ; samples 07 PB03-1 , 07 PB03-7 Khao Kana section, Pha Nok Khao Formation , Phetchabun province, central Thailand, Early Permian ; sample 07 PB05-6 , Ban Naen Sawan I section, Tak Fa Formation , Phetchabun province, central Thailand, Middle Permian .

DIMENSIONS. — H = 0.30-0.75 mm, L = 0.57-1.11 mm, H/L = 0.61-0.64.

REMARKS

The specimens can be compared to Cryptobairdia seminalis ( Knight, 1928) (see above) by the subelliptical outline and the wide AB; however, some differences are recognized such as the longer ADB of the former species and position of maximal H which is at mid L for the former species and in front of mid L for the latter species.

Figures

FIG. 15. — 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, Petasobairdia subnantongensis Chen,1987;A, right lateral view, SUT-09-2578, sample 07PB05-2; B, right lateral view, SUT-09-2583, sample 07PB05-3; C, left lateral view, SUT-09-2581, sample 07PB05-2. D-F, Cryptobairdia seminalis (Knight) sensu Shi & Chen, 1982; D, right lateral view, SUT-09-2507, sample 07PB04-2; E, right lateral view, SUT-09-2508, sample 07PB04-2; F, right lateral view, SUT-09-2511, sample 07LB05-5. G, Cryptobairdia sp., right lateral view, SUT-09-2515, sample 07PB03-17. H, Fabalicypris sp. C, right lateral view, SUT-09-2527, sample 07LB07-17. I, Bairdia sp. K, right lateral view,SUT-09-2317, sample 08LO07-8. J, K, Bairdiacypris sp. D; J, right lateral view,SUT-09-2355, sample 07PB05-3; K, right lateral view, SUT-09-2353, sample 07PB05-3. L, N, O, Liuzhinia praeantalyaensis Forel, 2010; L, dorsal view, SUT-09-2099, sample 08LO02-5;N, right lateral view,SUT-09-2100,sample 08LO02-5; O, right lateral view,SUT-09-2099,sample 08LO02-5.M, Bairdiacypris longirobusta Chen,1958, right lateral view, SUT-09-2361, sample 07LB05-5. Scale bars: 100 μm.

FIG. 16. — Ostracods from the limestones of the Indochina Block, Central Thailand. All specimens are stored at the Suranaree University of Technology Collections (Nakhon Ratchasima, Thailand) numbers SUT-09-xxxx. All specimens are complete carapaces in right lateral view. A, Bairdiacypris sp. E, SUT-09-2357, sample 07PB03-1; B, Bairdiacypris deloi Bradfield, 1935, SUT-09-2360, sample 07PB05-6; C-F, Fabalicypris hathaithipae Chitnarin, n. sp.; C, holotype, SUT-09- 2341, sample 07PB04-2; D, paratype, SUT-09-2348, sample 07PB04-2; E, paratype, SUT-09-2349, sample 07PB04-2; F, SUT-09-2235, sample 08LO07-8; G-I, Cryptobairdia sp., G, SUT-09-2364, sample 08LO07-1; H, SUT-09-2362, sample 07P05-6; I, SUT-09-2363, sample 07P03-1; J, K, Bairdiacypris sp. F; J, SUT-09- 2366, sample 08LO07-2; K, SUT-09-2367, sample 08LO02-11; L, Bairdia sp. L, SUT-09-2369, sample 07PB08-2; M, Bairdiacypris sp. G, SUT-09-2370, sample 07PB03-7; N, Bairdiacypris sp. H, SUT-09-2372, sample 07LB04-13; O, Bairdia sp. M, SUT-09-2373, sample 07LB09-2. Scale bars: 100 μm.