Lambdarina sinensis Baliński and Sun, 2008

Sun, Yuanlin & Baliński, Andrzej, 2011, Silicified Mississippian brachiopods from Muhua, southern China: Rhynchonellides, athyridides, spiriferides, spiriferinides, and terebratulides, Acta Palaeontologica Polonica 56 (4), pp. 793-842 : 812

Lambdarina sinensis Baliński and Sun, 2008

Fig. 13A .

1999 Lambdarina sp. ; Baliński 1999: 442, 445, fig. 4I–O, Q, R.

2008 Lambdarina sinensis n. sp.; Baliński and Sun 2008: 107–110, figs. 3, 4.

Material.—72 complete to slightly damaged shells, 12 fragments of shells, five dorsal and twelve ventral valves recovered from several samples taken from the Muhua Formation, namely Mu−42, MH 1, M2−8, D2, D4, GB, and GT.

Remarks.—This minute species from Muhua has been described and discussed in detail recently by Baliński and Sun (2008). It is the oldest representative of the genus and its proportionally shorter and wider shell lobes seem to be rather primitive feature. In this respect the Chinese species is the closest to the forerunner of the group, i.e., to Loborina lobata Baliński, 1982 from the Famennian of Poland ( Baliński 1982, 1995).

Stratigraphic and geographic range.—Known only from the type locality and horizon.

Figures

Fig. 13. Lambdarinoid brachiopods from the Tornaisian Muhua Formation, southern China. A. Lambdarina sinensis Baliński and Sun, 2008 (figured in Baliński and Sun 2008: fig. 3K–P), holotype ZPAL V.XXVI/26, shell in dorsal (A1), ventral (A2), lateral (A3), posterior (A4), anterior (A5), and oblique lateral (A6) views. B. Hampsia cooperi Morris, 1994, PKUM02−0434, shell in dorsal (B1), lateral (B2), and posterior (B3) views. C. Dacryrina dziki Baliński and Sun, 2008, PKUM02−0435, shell in dorsal (C1), lateral (C2), posterior (C3), and anterior (C4) views.All SEM micrographs. Samples Mu−42 (A), D (B), and GB (C).