Fig. 3 in New bizarre micro-spiriferid brachiopod from the Early Carboniferous of China

Fig. 3. Dorsal valves of Changshunella yangi gen. et sp. nov. Muhua III section, Muhua, Changshun County, Guizhou, China. A. PKUM02−0033, in lateral (A1), dorsal (A2), posterior (A3) and anterior (A4) views. B. PKUM02−0034, cardinalia in ventral view showing the striated cardinal process. C. PKUM02− 0035, holotype in lateral (C1), posterior (C2), anterior (C3), internal (C4), and dorsal (C5 and C6) views. D. PKUM02−0036, in lateral (D1), dorsal (D2), internal (D3), posterior (D4), and anterior (D5) views, and cardinalia in ventral view showing the striated cardinal process (D6). E. PKUM02−0037, internal view showing the trough−like median furrow corresponding to the external median plication. F. PKUM02−0038, interior of an incomplete valve showing the trough−like median furrow corresponding to the external median plication in general (F1) and more detailed (F2) views. G. PKUM02−0039, internal view (G1) and enlargement of lateral hinge area showing a row of accessory sockets (G2). H. PKUM02−0040, in dorsal (H1), internal (H2) and anterior (H3) views, and cardinalia in ventral view (H4) showing the cardinal process developed from secondary shell between apical inner socket ridges and crural bases. I. PKUM02−0041, cardinalia in ventral view showing the bilobate cardinal process. J. PKUM02−0043, in external (J1),internal (J2), lateral (J3) and posterior (B4) views. K. PKUM02−0044, in external (K1), internal (K2), posterior (K3) views, and interior in anterior view (K4). C1–C3, C5, C6, E–G are SEM images. All × 6 except C6 × 1, B, D6, F2, G2, H4, and I × 20.