Hungarella tulongensis Crasquin, 2011

Forel, Marie-Béatrice & Crasquin, Sylvie, 2011, In the aftermath of Permian-Triassic boundary mass-extinction: new ostracod (Crustacea) genus and species from South Tibet, Geodiversitas 33 (2), pp. 247-263 : 256-258

publication ID

https://doi.org/ 10.5252/g2011n2a3

publication LSID

lsid:zoobank.org:pub:790AC12D-10AA-4480-AD5B-BAA1A543C552

DOI

https://doi.org/10.5281/zenodo.4608677

persistent identifier

https://treatment.plazi.org/id/6A0387BA-FFC0-FFD2-88AE-0279FE78FC22

treatment provided by

Felipe

scientific name

Hungarella tulongensis Crasquin
status

sp. nov.

Hungarella tulongensis Crasquin n. sp. ( Fig. 8 View FIG A-F)

TYPE MATERIAL. — Holotype (P6M2662): one complete carapace ( Fig. 8A View FIG ); paratype (P6M2666): one complete carapace ( Fig. 8D View FIG ).

ETYMOLOGY. — From the Tulong section, type locality.

MATERIAL EXAMINED. — 230 complete carapaces and 18 isolated valves.

DIMENSIONS. — L = 380-570 µm; H = 240-350 µm. Holotype: L = 506 µm; H = 316 µm. Paratype: L = 514 µm; H = 308 µm.

TYPE HORIZON. — Unit V,Tulong Formation, Spathian, lower Triassic.

TYPE LOCALITY. — Tulong section, Southern Tibet .

OCCURRENCE. — Tulong section, SouthernTibet. Samples 06Ti20, 06Ti25, 06Ti26, 06Ti28-32 and 06Ti34, units V and VI, Spathian-Anisian, Early-Middle Triassic.

DIAGNOSIS. — A species of Hungarella with dorsal parts straight and carapace laterally compressed at AB.

DESCRIPTION

PD and AD parts long and straight on RV, straight to gently convex on LV; the two parts are at a 140-150° angle; AB regularly arched with a clear lateral flattening, maximum of convexity located around mid-H; VB regularly convex on both valves; PB with quite large radius of curvature, maximum of curvature located a little below mid-H; carapace subtriangular with maximum of H at mid-L or a little in front of; H/L = 0.62;

lateral view of a complete carapace (P6M2627); E, right lateral view of a broken carapace (P6M2628); F -H, Bairdiacypris combeae Forel n. sp.; F, holotype (P6M2626), right lateral view of a right valve; G, left lateral view of a complete carapace (P6M2625); H, paratype (P6M2624), left lateral view of left valve; I, Microcheilinella sp. A, right lateral view of left valve (P6M2629); J -M, Triassicindivisia tibetinella Crasquin n. gen., n. sp.; J, holotype (P6M2631), left lateral view of a complete carapace; K, paratype (P6M2632), left lateral view of a complete carapace; L, left lateral view of a complete carapace (P6M2636); M, left lateral view of a complete carapace (P6M2637). Scale bars: 100 μm.

LV overlap of LV on RV very weak all around the margins; surface smooth.

REMARKS

Hungarella tulongensis Crasquin n. sp. differs from the Upper Anisian species “ Hungarella View in CoL reniformis Méhes, 1911 from Lake Balaton ( Hungary; Méhes 1911; Monostori 1995) by H/L smaller and a maximum of convexity of BP located lower. Hungarella elongata (Blake, 1876) from the Late Triassic (Rhaetian) of Great Britain ( Anderson 1964) has the same anterior structure but the dorsal outline is less angular and H/L is smaller. Hungarella ovata Zheng, 1976 from the Rhaetian of South China ( Zheng 1976) is also relatively close to the new species but has a concave VB on RV and a PB with smaller radius of curvature ( Hungarella View in CoL genus needs re-collection and re-description).

Order PALAEOCOPIDA Henningsmoen, 1953 View in CoL Superfamily indet. Family indet.

V

Royal British Columbia Museum - Herbarium

VI

Mykotektet, National Veterinary Institute

Kingdom

Animalia

Phylum

Arthropoda

Class

Ostracoda

Order

Podocopida

Family

Healdiidae

Genus

Hungarella

Loc

Hungarella tulongensis Crasquin

Forel, Marie-Béatrice & Crasquin, Sylvie 2011
2011
Loc

Hungarella tulongensis Crasquin

Forel & Crasquin 2011
2011
Loc

Hungarella ovata

Zheng 1976
1976
Loc

PALAEOCOPIDA

Henningsmoen 1953
1953
Loc

Hungarella

Mehes 1911
1911
Loc

reniformis Méhes, 1911

Mehes 1911
1911
Loc

Hungarella

Mehes 1911
1911
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