Fig. 25 in Silicified Mississippian brachiopods from Muhua, southern China: Lingulids, craniids, strophomenids, productids, orthotetids, and orthids

Fig. 25. Orthotetoid brachiopod of Lamellispina spinosa gen. et sp. nov. from the Muhua Formation, sample MH1. A. Dorsal valve, PKUM02−0333, in posterior view showing cardinalia. B. Juvenile dorsal valve, PKUM02−0334, in exterior view. C. Interior of dorsal valve, PKUM02−0335, in ventral (C1), oblique lateral (C2), enlarged ventral (C3), enlarged oblique (C4), and ventrolateral (C5) views illustrating disposition of socket ridges, cardinal process and adductor scars. D. Dorsal valve, PKUM02−0336, in interior (D1), enlarged interior (D2; notice slightly damaged socket ridges), ventrolateral (D3), oblique anterior (D4, D5; notice spinous, half−tube−like projections at the valve margin) views. E. Fragment of a large dorsal valve, PKUM02−0337, showing well preserved cardinalia. All SEM micrographs. Scale bars 1 mm.