Mesoplica sp.

Halamski, Adam T. & Baliński, Andrzej, 2009, Latest Famennian brachiopods from Kowala, Holy Cross Mountains, Poland, Acta Palaeontologica Polonica 54 (2), pp. 289-306 : 292

Mesoplica sp.

Fig. 2K .

Material.—Single ventral valve, ZPAL Bp 57/1 from set L.

Description.—The ventral valve attains nearly 30 mm in width, is strongly convex and irregularly ornamented with both thick and fine radial ribs (only the latter in the umbonal region).

Remarks.—The single incomplete and strongly decorticated dorsal valve ZPAL Bp 57/8, which was found in the same set, is ornamented with fine continuous radial ribs (c. 7–8 per 5 mm) and most probably represents another indeterminate taxon (see Fig. 2J ).

Figures

Fig. 2. Middle to Latest Famennian brachiopods from Kowala. A. Barroisella sp. The bivalved specimen ZPAL Bp 57/70a showing strongly exfoliated ventral valve (ventral internal mould) and interior of dorsal valve (lower right) (A1) and its counterpart ZPAL Bp 57/70b (A2); enlargement of the posterior region of the ventral valve showing pseudointerarea and elongated median muscle scar (A3). B–E. Aulacella interlineata (Sowerby, 1840). B–D. Three shells ZPAL Bp 57/4a, 4b, and 86, respectively, in dorsal (B1, C1, D1) and ventral (B2, C2, D2) views showing variability in the shell outline. E. Dorsal valve ZPAL Bp 57/5 exterior (E1) and interior (E2). F, H, I. Schellwienella pauli (Gallwitz, 1932). F. Slightly destroyed shell ZPAL Bp 57/20 in dorsal (F1), ventral (F2), lateral (F3), posterior (F4), and anterior (F5) views. H. Limestone block ZPAL Bp 57/103 with accumulation of shells of S. pauli. I. Interior of ventral valve ZPAL Bp 57/100. G. Productida indet., mould ZPAL Bp 57/7 of exfoliated dorsal valve. J. Productida indet. Posterior view of mostly decorticated and slightly crushed dorsal valve ZPAL Bp 57/8. K. Mesoplica sp. Ventral valve ZPAL Bp 57/1 in ventral (K1) and posterior (K2) views. Scale bars 5 mm.