Leiorhynchidae Stainbrook, 1945

Baliński, Andrzej, 2006, Brachiopods and their response to the Early-Middle Frasnian biogeochemical perturbations on the South Polish carbonate shelf, Acta Palaeontologica Polonica 51 (4), pp. 647-678 : 663

Family Leiorhynchidae Stainbrook, 1945 Genus Plionoptycherhynchus Sartenaer, 1979

Type species: Plionoptycherhynchus exformosus Sartenaer, 1979 ; Frasnian , France .

Plionoptycherhynchus cracoviensis ( Gürich, 1903) Fig. 7F, G .

1903 Leiorhynchus Cracoviensis Gür. ; Gürich 1903: 149–150, pl. 2: 14; fig. 3.

1979 Calvinaria cracoviensis ( Gürich, 1903) ; Baliński 1979: 38–40, pl. 5: 1–5; fig. 12A, B.

2003 Plionoptycherhynchus cracoviensis ( Gürich, 1903) ; Baliński in Baliński et al. 2003: 210, pl. 166: 7.

Material.—One complete shell and 13 fragments from northern quarry at Dębnik in addition to the collection described earlier from Rokiczany Dół ravine north of Dębnik (see Baliński 1979).

Remarks.—The species was revised by Baliński (1979). It was then known only from dark−gray biopelmicrites of Rokiczany Dół ravine for which it was characteristic fossil ( Plionoptycherhynchus cracoviensis local brachiopod Zone). During present investigation the species was recovered also in the highest beds of the west wall of the northern quarry at Dębnik.

Occurrence.—Upper part of Rokiczany Dół ravine and highest beds of the northern quarry at village of Dębnik.

Figures

Fig. 7. Rhynchonellid brachiopods from the Frasnian of Wietrznia and Dębnik. A, B. Hypothyridina sp., ZPAL Bp 60/28 (A) and GIUS 4−273 Wt/IM−4 (B), two complete shells from the middle Wietrznia Beds of Wietrznia Ie and Id−W, respectively, in dorsal (A1, B1), ventral (A2, B2), lateral (A3, B3), posterior (A4, B4), and anterior (A5, B5) views. C. Fitzroyella alata Biernat, 1969, GIUS 4−273 Wt/GR−1, complete shell from the middle Wietrznia Beds of Wietrznia Id−W. D, E. Fitzroyella sp. from the middle Wietrznia Beds of Wietrznia Id−W. D. Incomplete specimen GIUS 4−273 Wt/IM−7 in dorsal (D1) and ventral (D2) views. E. Complete shell GIUS 4−273 Wt/GR−2 in dorsal (E1), ventral (E2), lateral (E3), posterior (E4), and anterior (E5) views. F, G. Plionoptycherhynchus cracoviensis (Gürich, 1903) from the Nodular Limestone (Palmatolepis hassi Zone) of Dębnik. F. ZPAL Bp 60/17, fragment of a large shell in ventral view. G. ZPAL Bp 60/4, complete shell in dorsal (G1), ventral (G2), lateral (G3), posterior (G4), and anterior (G5) views. H. Phlogoiderhynchus polonicus (Roemer, 1866) from the middle Wietrznia Beds of Wietrznia Id−W, shell GIUS 4−273 Wt/IM−8 in dorsal (H1), ventral (H2), lateral (H3), posterior (H4), and anterior (H5) views.