Pluckidina kielcensis, Dzik, 2002

Dzik, Jerzy, 2002, Emergence and collapse of the Frasnian conodont and ammonoid communities in the Holy Cross Mountains, Poland, Acta Palaeontologica Polonica 47 (4), pp. 565-650 : 600

Pluckidina kielcensis sp. nov.

Fig. 10 .

Holotype: P 1 (sp) element ZPAL CXVI/1063 ( Fig. 10A ).

Type horizon and locality: Wietrznia Iquarry in Kielce, sample Wtr−9; early Frasnian—associated with Ancyrodella rotundilobata and Mesotaxis asymmetrica .

Derivation of the name: From Kielce, the capital city of the region.

Diagnosis.—External process of the S 3 (ke) elements with gently curved, M (ne) elements with relatively long inner process and acute outer ones.

Remark.—The apparatus of Pluckidina kielcensis sp. nov. has been already illustrated (as Prioniodina sp. ) in Dzik (1991b). Both elements M (ne) and S 2 (pl) in this species are of a generalised appearance, which make it different from P. slupiensis sp. nov. Prioniodina tortoides Sparling, 1981 seems to be closely related and may be ancestral to P. kielcensis sp. nov.

Distribution.—Early Frasnian of Wietrznia in the Holy Cross Mountains, Poland (see Table 1 and Fig. 4 ).

Figures

Fig. 10. The Frasnian prioniodinid Plucki− dina kielcensis sp. nov. from the early Fras− nian of Wietrznia (sample Wtr−9), Holy Cross Mountains, P1 (sp) element ZPAL CXVI/1063 (A, holotype), P2 (oz) element ZPAL CXVI/1064 (B), S2 (pl) element ZPAL CXVI/1066 (C), S0 (tr) element ZPAL CXVI/1065 (D), S1 (lo) element ZPAL CXVI/1067 (E), S3 (ke) element ZPAL CXVI/1068 (F), S4 (hi) element ZPAL CXVI/1069 (G), and M (ne) element ZPAL CXVI/1070 (H).

Fig. 4. Correlation of studied sections of the Frasnian in the Holy Cross Mountains, Poland and position of conodont samples and ammonoid−bearing horizons. Note that the complete section of the Płucki main trench (extreme left) is drawn in different scale; samples between Pł−25 and Pł−18 come from small trenches. Above is a map of the Wietrznia quarries with locations of the sampled sections; the basal part of the section, with Ancyrodella soluta, has not been sampled because of low frequency of conodont elements (see Racki 1993); provisional zonation based on other Ancyrodella species is shown. Kowala section was measured at the eastern end of the quarry, the highest exploitation level. A. Wietrznia 1d of Racki et al. (1993; Racki and Bultynck 1993). B. Wietrznia 1e. C. Wietrznia block D of Szulczewski (1989). D. Wietrznia II.