Baschkirina ruchae Chitnarin, 2017

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 : 678-679

publication ID	https://doi.org/10.5252/g2017n4a1
publication LSID	urn:lsid:zoobank.org:pub:DB464417-3EA1-4C4E-9C03-624C1627969C
persistent identifier	https://treatment.plazi.org/id/03FB87D0-D41D-2E4A-F5C9-F8D9FE3D5A53
treatment provided by	Felipe (2021-02-11 18:30:34, last updated 2021-02-11 18:30:38)
scientific name	Baschkirina ruchae Chitnarin
status	n. sp.

Treatment

Baschkirina ruchae Chitnarin , n. sp.

( Figs 24 A-D; 25)

TYPE MATERIAL. — Holotype, one complete carapace (SUT-09- 2375, Fig.24A); paratypes, two complete carapaces (SUT-09-2374, Fig. 24C and SUT-09-2380, Fig. 24D).

MATERIAL EXAMINED. — 17 complete carapaces.

DIMENSIONS. — H = 0.35-0.51 mm, L = 0.55-0.73 mm, H/L = 0.64- 0.69, Holotype: H = 0.51 mm, L = 0.74 mm; Paratype ( Fig. 24C): H = 0.39 mm, L = 0.59 mm; Paratype ( Fig. 24D): H = 0.53 mm, L = 0.82 mm ( Fig. 25).

TYPE HORIZON. — Sample 08LO02-2, Nam Maholan section, Nam Maholan Formation, Loei Province, Early Permian.

TYPE LOCALITY. — Sample 08LO02-2, Nam Maholan section (17°06’23’’N, 101°52’48’’E), Nam Maholan Formation, Loei Province, Early Permian.

DIAGNOSIS. — Species of Baschkirina with subtriangular carapace, highly arched dorsal outline, and AB laterally compressed with maximum convexity located below mid H, flanks subparallel in dorsal view.

DESCRIPTION

Carapace subtriangular; dorsal outline highly arched; DB straight and inclined at 30° rearward; ADB long, straight to slightly convex, with an angle of 120° with DB; PDB inclined sharply, making angle of 150° with DB; AB rounded with medium radius of curvature, maximum convexity located below mid H, and flattened laterally; AVB short; VB straight; PVB short; PB small, sub-spinose and located at or just above ventral level; LV slightly overlaps RV all around the carapace; greatest H located at mid L; in dorsal view, carapace thick, flanks subparallel and AB laterally compressed.

REMARKS

Baschkirina ruchae Chitnarin , n. sp. can be compared with B. buekkensis Kozur, 1985 from the Pennsylvanian of French Pyrénées and Bükk Mts, Hungary ( Kozur 1985b: 90-91, pl. 22, fig. 1); however, B. buekkensis is characterized by a smaller H, a longer DB and the position of maximum H in front of mid L. It can be differentiated from B. shii Kozur, 1985 from the Wuchiapingian of Bükk Mts, Hungary ( Kozur 1985a: 92, pl. 22, fig. 4) by an AB with smaller radius of curvature and strongly compressed laterally.