Fig. 22 in Silicified Mississippian brachiopods from Muhua, southern China: Lingulids, craniids, strophomenids, productids, orthotetids, and orthids

Fig. 22. Orthotetoid brachiopod Schuchertella sp. from the Muhua Formation. A. Posteriormost fragment of the ventral valve, PKUM02−0318, in external (A1) and internal (A2) views showing interarea, pseudodeltidium and dental ridges. B. Incomplete ventral valve, PKUM02−0319, in exterior (B1), dorsal (B2), and anterodorsal (B3) views. C. Incomplete dorsal valve, PKUM02−0320, in exterior (C1) and interior (C2) views; note abnormal development of juvenile shell. D. Incomplete dorsal valve, PKUM02−0321, in exterior (D1) and interior (D2) views. Samples D4 (A) and MH1 (B–D).