Fig. 34. Terebratulide brachiopods from the Tornaisian Muhua Formation, southern China. A, B, D–F, J in Silicified Mississippian brachiopods from Muhua, southern China: Rhynchonellides, athyridides, spiriferides, spiriferinides, and terebratulides

Fig. 34. Terebratulide brachiopods from the Tornaisian Muhua Formation, southern China. A, B, D–F, J. Cryptonella sp. 1. A. Slightly damaged shell, PKUM02−0581, in dorsal (A1) and lateral (A2) views. B. Incomplete juvenile shell, PKUM02−0582, in dorsal (B1), ventral (B2), and lateral (B3) views. D. Incomplete ventral valve, PKUM02−0583, in interior (D1) and exterior (D2) views. E. Interior of incomplete dorsal valve, PKUM02−0584, showing well preserved cardinal plate and crural bases. F. Incomplete dorsal valve, PKUM02−0585, viewed from the interior (F1) and enlargement of the posterior region showing cardinalia (F2). J. Incomplete juvenile shell, PKUM02−0586, with well visible endopunctae. C, G, I. Cryptonella sp. 2. C. Interior of incomplete dorsal valve, PKUM02−0587, in general view (C1) and enlargement of slightly tilted posterior region showing cardinal plate, sockets and elongate muscle scars. G. Incomplete ventral valve, PKUM02−0588, viewed from the interior showing conjunct deltidial plates, teeth, and pedicle foramen. I. Interior of incomplete dorsal valve, PKUM02−0589, showing unsupported cardinal plate. H, K. Cryptonelloid gen. et sp. indet. H. Interior of incomplete dorsal valve, PKUM02−0590, showing divided hinge plates (damaged cardinal plate?). K. Incomplete dorsal valve, PKUM02−0591, in exterior (K1) and interior (K2) views showing probably damaged cardinal plate. E, F, J, SEM micrographs. Samples MH1 (A–E, G–I, K), MH2 (F), and GT (J). Scale bars 1 mm.