Fig. 23 in Silicified Mississippian brachiopods from Muhua, southern China: Lingulids, craniids, strophomenids, productids, orthotetids, and orthids

Fig. 23. Orthotetoid brachiopod Serratocrista sp. from the Muhua Formation. A, B. Young ventral valves, PKUM02−0322 (A) and PKUM02−0323 (B), in exterior (A1, B1), interior (A2, B2), and posterior (A3, B3) views. C. Slightly damaged dorsal valve, PKUM02−0324, in exterior (C1) and interior (C2) views. D. Incomplete ventral valve, PKUM02−0325, in exterior (D1) and interior (D2) views. Sample D4 (A, C) and GB (B, D).