Pandorinellina, Muller and Muller, 1957

Drygant, Daniel & Szaniawski, Hubert, 2012, Lochkovian conodonts from Podolia, Ukraine, and their stratigraphic significance, Acta Palaeontologica Polonica 57 (4), pp. 833-861 : 856-858

Pandorinellina ? parva sp. nov.

Fig. 12V, Y.

2010 Pandorinellina sp. nov.; Drygant 2010: pl. 1: 21.

Etymology: From Latin parva, little.

Holotype: Complete Pa element SMNH D1420 ( Fig. 12V).

Type locality: Outcrop 11, the left side of the Dniester 2 km below the village Dobrivlyany ( Fig. 1 , Table 1).

Type horizon: Ivanye Formation, upper Lochkovian–Pragian.

Material.—Five complete Pa elements and numerous fragments from Ivanye Formation. Sections and samples: 11/4, 52/ 525 m. Other elements of the multielement apparatus are not know.

Diagnosis.—Blade short and high, faintly sigmoidaly twisted. Denticles narrow, two−three anterior slightly bigger than others. Cusp not differentiated. Basal cavity situated at the middle of the blade.

Description.—Blade of the Pa elements short (about 0.70– 0.75 mm), high (about 0.3 mm), slightly sigmoidal twisted, lower on the posterior end. Denticles narrow, in posterior part slightly inclined posteriorly. Two−three anterior denticles slightly bigger than others. Cusp not well differentiated. Basal cavity located at the mid−length, has small and symmetrical lips of rounded outline.

Remarks.—New species seems closest to Zieglerodina serrula , differing from it by the higher anterior denticles, characteristic for the genus Pandorinellina twisted blade.

( Drygant, 1984); Syn'kiv−45/ 180 m. G. ZPAL C.20/11.18. K. ZPAL C.20/11.19. H. Transitional form between Zieglerodina mashkovae ( Drygant, 1984) and Pandorinellina ? sp.; Syn'kiv−45/ 170 m, ZPAL C.20/11.20. I. Transitional form between Zieglerodina remscheidensis ( Ziegler, 1960) and Pandorinellina? formosa Drygant, 2010 ; Khudykivtsi−16/ 45 m, ZPAL C.20/11.4. L. Transitional form between Zieglerodina remscheidensis ( Ziegler, 1960) and Z. mashkovae ( Drygant, 1984) ; Syn'kiv−45/ 190 m, ZPAL C.20/10.20. M, P, T. Lanea omoalpha Murphy and Valenzuela−Ríos, 1999 ; Syn'kiv−45/ 170 m. M. ZPAL C.20/11.14. P. ZPAL C.20/11.16. T. ZPAL C.20/11.15. N, O. Pandorinellina steinhornensis (Ziegler, 1956) ; Ustechko−108/ 525 m. N. ZPAL C.20/11.25. O. ZPAL C.20/11.26. Q. Transitional form between Zieglerodina remscheidensis ( Ziegler, 1960) and Pandorinellina ? sp.; Khudykivtsi−16/1v, SMNH D1429. R, S. Pandorinellina praeoptima ( Mashkova, 1972) . R. Zalishchyky−2/ 490 m, ZPAL C.20/9.21. S. Zalishchyky−2/1v, SMNH D1435. A 1, B 1, C–F, G 1 – I 1, J, K 1, L, M 1 –P 1, Q–S, T 1 lateral view; A 2, B 2, G 2 –I 2, K 2, M 2 –P 2, T 2 upper view.

http://dx.doi.org/10.4202/app.2011.0124

Stratigraphic and geographic range.— Caudicriodus serus and Caudicriodus? steinachensis zones, upper Lochkovian to?Pragian in Podolia.

Figures

Fig. 1. A. General location of the study area. B. Distribution of the subsurface Silurian and Devonian deposits in Podolia and geological setting of the area. 1, Eastern extent of the Silurian deposits; 2, Eastern extent of the Devonian Tyver Group (see Fig. 2); 3, Eastern extent of Dniester Member (Old Red Formation); 4, Western extent of the Devonian deposits. 5. Extent of the Middle Devonian deposits (area of the Lviv Depression); 6, Location of the studied borings. C. Location and numbers of the studied outcrops (see also Table 1).