Hungarella gerennavarensis Crasquin, 2013

Forel, Marie-Béatrice, Crasquin, Sylvie, Hips, Kinga, Kershaw, Steve, Collin, Pierre-Yves & Haas, János, 2013, Biodiversity evolution through the Permian-Triassic boundary event: Ostracods from the Bükk Mountains, Hungary, Acta Palaeontologica Polonica 58 (1), pp. 195-219 : 206-208

Hungarella gerennavarensis Crasquin sp. nov.

Figs. 13 , 15M–P .

Etymology: In reference to the occurrence of the species in the Gerennavár Limestone Formation.

Type material: Holotype: one complete carapace, Fig. 14M , UPMC P6M2875 , sample 08BAN62 . Paratype: one complete carapace, Fig. 14N , UPMC P6M2876 , sample 08BAN67 .

Type locality: Bálvány North section, Bükk Mountains, Hungary .

Type horizon: Level 8, Gerennavár Limestone Formation , Griesbachian, Lower Triassic .

Material.—5 complete and 1 broken carapaces, samples 08BAN62, 63, 64, and 67 (see Fig. 2B), level 8, Gerennavár Limestone Formation, Bálvány North section, Hungary, Griesbachian, Lower Triassic.

Diagnosis.—A species of Hungarella with a high vertical PB, Hmax located behind mid−L.

Dimensions.—L 250–560 µm; H 150–300 µm (see Fig. 13 ).

Description.—Carapace quite short (H/L = 0.60); PB quite vertical with angular contact with VB; VB convex to straight at RV, concave at LV; dorsal parts of LV more or

http://dx.doi.org/10.4202/app.2011.0126 200 250 300 350 400 450 500 550 600 L (μm)

less regularly rounded, DB and PDB in continuity, ADB nearly straight; dorsal margin of RV clearly differentiated into straight PDB, DB and ADB; AB regularly arched with maximum of curvature located between lower 1/3 and 1/2 of H; Hmax located behind mid−L; LV slightly overlaps RV all around the carapace. Internal features unknown.

Discussion.— Hungarella gerennavarensis sp. nov. differs from “ Healdia ” sp. A from Griesbachian of Guangxi (Crasquin−Soleau et al. 2006) in its more vertical PB, from Hungarella tulongensis Crasquin, 2011 from Spathian to Anisian of South Tibet ( Forel and Crasquin 2011 a) in the more posterior position of Hmax and the lack of a lateral compression at the AB.

Stratigraphic and geographic range.—Bálvány North section, level 8, samples 08BAN62, 63, 64, and 67 (see Fig. 2B), Gerennavár Limestone Formation, Griesbachian, Lower Triassic.

Figures

Fig. 13. Height/length diagram of Hungarella gerennavarensis Crasquin sp. nov.

Fig. 15. Ostracods from Bálvány North section, Bükk Mountains, Hungary. Right lateral views of complete carapaces. A. Bairdiacypris cf. fornicata Shi, 1982, UPMC P6M2863, sample 08BAN47, Upper Permian. B–J. Cytherellina? magyarorszagensis Forel sp. nov., Griesbachian, Lower Triassic. B. Holotype, UPMC P6M2864, sample 08BAN63. C. Paratype, UPMC P6M2865, sample 08BAN61. D. UPMC P6M2866, sample 08BAN61. E. UPMC P6M2867, sample 08BAN63. F. UPMC P6M2868, sample 08BAN63. G. UPMC P6M2869, sample 08BAN62. H. UPMC P6M2870, sample 08BAN61. I. UPMC P6M2871, sample 08BAN62. J. UPMC P6M2872, sample 08BAN62. K, L. Cytherellina? sp. E, Changhsingian, Upper Permian. K. UPMC P6M2873, sample 08BAN47. L. UPMC P6M2874, sample 08BAN47. M–P. Hungarella gerennavarensis Crasquin sp. nov., Griesbachian, Lower Triassic. M. Holotype, UPMC P6M2875, sample 08BAN62. N. Paratype, UPMC P6M2876, sample 08BAN67. O. UPMC P6M2877, sample 08BAN63. P. UPMC P6M2878, sample 08BAN63. Q–X. Microcheilinella egerensis Forel sp. nov., Griesbachian, Lower Triassic. Q. Holotype, UPMC P6M2879, sample 08BAN61. R. UPMC P6M2880, sample 08BAN63. S. Paratype, UPMC P6M2881, sample 08BAN61. T. UPMC P6M2882, sample 08BAN62. U. UPMC P6M2883, sample 08BAN61. V. UPMC P6M2884, sample 08BAN61. W. UPMC P6M2885, sample 08BAN63. X. UPMC P6M2886, sample 08BAN61. Scale bars 100 µm.

Fig. 14. Height/length diagram of Cytherellina? magyarorszagensis Forel sp. nov.