Fig. 35 in Silicified Mississippian brachiopods from Muhua, southern China: Rhynchonellides, athyridides, spiriferides, spiriferinides, and terebratulides

Fig. 35. Fragmentary and juvenile undetermined brachiopods from the Tornaisian Muhua Formation, southern China. A–N. Small shells and single valves probably representing juveniles of athyrididoids. A–D. Four complete shells in dorsal view, PKUM02−0592 (A), PKUM02−0593 (B), PKUM02−0594 (C), and PKUM02−0595 (D). E. Shell PKUM02−0596 with damaged dorsal valve in dorsal view showing partially preserved spiralium and jugum (arrowed). F, N. Two dorsal valves, PKUM02−0597 (F) and PKUM02−0598 (N), viewed from the interior. G, I. Two shells, PKUM02−0599 (G) and PKUM02−0600 (I), in dorsal (G1, I1), ventral (G2, I2), lateral (G3, I3), and posterior (G4, I4) views. H. Complete shell, PKUM02−0601, in dorsal (H1), lateral (H2), and anterior (H3) views. J, L, M. Three ventral valves viewed internally, PKUM02−0602 (J), PKUM02−0603 (L), and PKUM02−0604 (M). K. Slightly damaged ventral valve, PKUM02−0605, interior (K1) and enlargement of the posterior region (K2). O–U. Fragmentary specimens probably representing juvenile rhynchonellides. O. Umbonal region of conjoined valves, PKUM02−0606, in posterior (O1), anterior (internal) (O2), and oblique lateral (O3) views, showing convergent ventrally dental plates and cardinalia. P, Q. Interior of two fragmentary umbonal regions of conjoined valves showing convergent ventrally dental plates and cardinalia, PKUM02−0607 (P) and PKUM02−0608 (Q). R–T. Interior of three fragmentary dorsal valves, PKUM02−0609 (R), PKUM02−0610 (S), and PKUM02−0611 (T), showing cardinalia and long median septum. U. Interior of umbnonal fragment of the ventral valve, PKUM02−0612, showing well developed dental plates. A–F, K, L–N SEM micrographs. All from sample MH1.