Liuzhinia Zheng, 1976

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

Genus Liuzhinia Zheng, 1976

TYPE SPECIES. — Liuzhinia subovata Zheng,1976 by original designation.

Liuzhinia praeantalyaensis Forel, 2010 ( Fig. 15L, N, O )

Liuzhinia praeantalyaensis Forel in Crasquin, Forel, Feng, Yuan, Baudin & Collin, 2010a: 253-255, fig. 23Z-B’.

MATERIAL EXAMINED. — Three complete carapaces.

OCCURRENCES. — Kongtongshan section, Fujian Province, China, Late Permian ( Yi 2004); Meishan section, Zhejiang Province, South China, Late Permian ( Crasquin et al. 2010a); sample 08LO02-5, Tham Nam Maholan section, Nam Maholan Formation, Loei Province, northeast Thailand, Early Permian.

DIMENSIONS. — H = 0.29-0.30 mm, L= 0.59- 0.59 mm,H/L = 0.50-0.51

Liuzhinia naramasei Chitnarin , n. sp. ( Figs 13 A-H; 20)

TYPE MATERIAL. — Holotype, one complete carapace (SUT-09- 2071, Fig.13A ); paratypes, two complete carapaces (SUT-09-2076, Fig. 13E and SUT-09-2074, Fig. 13H ).

ETYMOLOGY. — In honour of Mr Naramase Teerarungsigul, Department of Mineral Resources, Thailand.

MATERIAL EXAMINED. — 29 complete carapaces.

DIMENSIONS. — H = 0.26-0.44 mm, L = 0.52-0.56 mm, H/L = 0.50- 0.58, Holotype: H = 0.26 mm, L = 0.53 mm; Paratype ( Fig. 13E ): H = 0.26 mm, L = 0.528 mm; Paratype ( Fig. 13H ): H = 0.27 mm, L = 0.63 mm ( Fig. 20)

TYPE HORIZON. — Sample 07LB09-1, Khao Phu Chong Kho section, Tak Fa Formation, Kungurian, Early Permian.

TYPE LOCALITY. — Khao Phu Chong Kho section (15°22’45’’N, 100°35’12’’E) Tak Fa Formation, Lopburi Province, central Thailand.

OCCURRENCES. — Sample 07 PB03-5 , Khao Kana section, Pha Nok Khao Formation , Phetchabun Province, central Thailand, Early Permian ; sample 08LO07-1, Sak Chai Quarry, Pha Nok Khao Formation , central Thailand, Early Permian ; sample 07LB09-2, Khao Phu Chongko section, Tak Fa Formation , Nakhon Sawan Province, central Thailand, Early Permian ; samples 07LB05-B1 and 07LB05-B2, Ta Kli section, Tak Fa Formation , Nakhon Sawan Province, central Thailand, Early Permian .

DIAGNOSIS. — Species of Liuzhinia with a subtrapezoidal carapace, ADB and PDB straight, AB rounded and laterally flattened, maximum convexity located below mid H, PB acuminate and with maximum of curvature located at VB, ventral area flat.

DESCRIPTION

Carapace small, subtrapezoid; dorsal outline broadly arched; DB straight and gently inclined to posterior; ADB and PDB straight; AB rounded with medium radius of curvature, maximum convexity located below mid H; AVB short and slightly convex;VB straight; AB and AVB laterally flattened;PVB short; PB acuminated and located at VB level; greatest H located anteriorly at one-fourth of length;dorsal outline subfusiform; surface smooth; LV larger and overlap RV all around the carapace;.

REMARKS

The new species differs from Liuzhinia antalyaensis Crasquin- Soleau, 2004 described from the Late Permian-Early Triassic interval of Turkey (Antalya Nappes; Crasquin-Soleau et al. 2004) by having a smaller PB and max H located in front of mid L. It can be compared with L. praeantalyaensis from the latest Permian af Meishan section, Zhejiang Province, South China ( Crasquin et al. 2010a) by having AB located below mid H and the smaller PB but the carapace of L. naramasei Chitnarin , n. sp. is thicker in dorsal view.

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. 13. — 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-H, Liuzhinia naramasei Chitnarin,n. sp.;A, holotype,right lateral view, SUT-09-2071, sample 07LB09-1; B, dorsal view, SUT-09-2070, sample 07LB09-1; C, ventral view, SUT-09-2081, sample 07LB05-A2; D, right lateral view, SUT-09- 2080,sample 07LB05-A2;E, paratype,right lateral view,SUT-09-2076,sample 07PB03-5;F, right lateral view,SUT-09-2086,sample 07LB05-B2;G, right lateral view, SUT-09-2095, sample 07LB09-2; H, paratype, right lateral view, SUT-09-20742074, sample 08L01-1; I,?Pseudocanthoscapha sp., right lateral view, SUT-09-2647, sample 08LO07-2; J, Bohlenatia sp., right lateral view, SUT-09-2491, sample 08LO02-1; K, L, Bairdia piscariformis Chen, 1958; K, right lateral view, SUT-09-2299, sample 07LB09-1; L, right lateral view, SUT-09-2298, sample 08LO02-1; M-P, Cavellina sp.; M, right lateral view, SUT-09-2494, sample 07PB03-3; N, right lateral view,SUT-09-2493,sample 07PB03-3;O, left lateral view,SUT-09-2506,sample 07PB03-3;P, right lateral view,SUT-09-2495,sample 07PB03-3.Scale bars:100 μm.