Fig. 15 in Silicified Mississippian brachiopods from Muhua, southern China: Rhynchonellides, athyridides, spiriferides, spiriferinides, and terebratulides

Fig. 15. Athyridoid brachiopod Cleiothyridina deroissyi (Léveillé, 1835) from the Tornaisian Muhua Formation, southern China. A. Complete juvenile shell, PKUM02−0443, in dorsal (A1), lateral (A2), and anterior (A3) views. B, C. Two almost complete shells, PKUM02−0444 (B) and PKUM02−0445 (C), in dorsal (B1, C1), ventral (B2, C2), and anterior (B3, C3) views, and enlargement of ventral valve showing micro−ornamentation (C4). D. Dorsal valve, PKUM02−0446, viewed externally (D1) and internally (D2). E. Ventral valve, PKUM02−0447, in exterior (E1), interior (E2), and the same inclined anteriorly (E3) views. F. Dorsal valve, PKUM02−0448, in exterior (F1) and interior (F2) views and enlarged view of cardinalia (F3) and corroded surface micro−ornamentation (F4). G. Dorsal valve, PKUM02−0449, interior (G1) and enlarged view of cardinalia (G2). H. Complete shell, PKUM02−0450, in dorsal (H1), ventral (H2), lateral (H3), anterior (H4), and posterior (H5) views, and enlargement showing shell micro−ornamentation (H6). All from sample MH1.