Fig. 26. Spiriferide brachiopods from the Tornaisian Muhua Formation, southern China. A–J in Silicified Mississippian brachiopods from Muhua, southern China: Rhynchonellides, athyridides, spiriferides, spiriferinides, and terebratulides

Fig. 26. Spiriferide brachiopods from the Tornaisian Muhua Formation, southern China. A–J. Parallelora sp. A. Incomplete dorsal valve, PKUM02−0516, in exterior (A1), interior (A2), and inclined interior (A3) views. B. Incomplete dorsal valve, PKUM02−0517, in exterior (B1) and interior (B2) views, and enlargement of cardinalia (B3). C. Incomplete dorsal valve, PKUM02−0518, in exterior (C1), interior (C2), and enlarged exterior (C3) views showing surface micro−ornamentation. D. Incomplete ventral valve, PKUM02−0519, in exterior (D1), interior (D2), and posterior (D3) views. E. Incomplete ventral valve, PKUM02− 0520, in exterior (E1) and interior (E2) views, and enlarged posterior region (E3). F. Interior of incomplete ventral valve, PKUM02−0521, showing partly preserved muscle scars. G. Incomplete ventral valve, PKUM02−0522, in exterior (G1) and interior (G2) views. H. Incomplete ventral valve, PKUM02−0523, in posterior (H1; showing subrectangular interarea), fragmentary interior (H2; showing denticulate hinge line), and exterior (H3) views. I. Incomplete ventral valve, ZPAL V.XXVI/71, in exterior (I1), interior (I2), and posterior (I3) views. J. Interior of incomplete ventral valve, PKUM02−0524, showing accessory denticulation. K. Finospirifer sp., incomplete ventral valve, PKUM02−0525, in anterior (K1) and exterior (K2) views. L. Spirifer (Mesochorispira) sp., exterior of incomplete ventral valve, PKUM02−0526; note numerous ctenostomate borings. Samples GB (A–H, J, K), GT (I), and MH1 (L).