Fig. 14 in Silicified Mississippian brachiopods from Muhua, southern China: Rhynchonellides, athyridides, spiriferides, spiriferinides, and terebratulides

Fig. 14. Athyridoid brachiopod Actinoconchus sp. from the Tornaisian Muhua Formation, southern China. A. Complete shell, PKUM02−0436, in dorsal (A1), ventral (A2), lateral (A3), and anterior (A4) views. B. Shell, PKUM02−0437, in dorsal (B1), ventral (B2), and anterior (B3) views. C. Ventral valve, PKUM02−0438, viewed from exterior (C1), and interior (C2). D. Dorsal valve, PKUM02−0439, in exterior (D1), interior (D2), and lateral (D3) views, and enlargement of the external lamellose ornamentation (D4). E. Incomplete ventral valve, PKUM02−0440, viewed internally (E1) and enlargement showing dental plates and muscle scars (E2). F. Umbonal region of a broken shell, PKUM02−0441, showing dental plates and cardinalia (dorsal valve below). G. Exterior of ventral valve, PKUM02−0442, showing well preserved long growth lamellae. All from sample MH1.