Figure 5 in The muscles, body wall and valve-opening mechanism of extant craniid (inarticulated) brachiopods

Figure 5. Line drawings and digital and scanning electron micrographs illustrating organic ventral mounds and lophophore filaments. (A, B) Novocrania lecointei. (A) NIWA 37947. Transparent organic ventral valve with organic ventral mound on dark rock. (B) Cutaway drawing down midline. (C–F) Novocrania anomala. (C) OU 44526a. Ventral valve with organic ventral mound. (D) OU 44525a. Ventral valve with organic mound rotted away. (E) OU 39355. Dorsal valve with muscle scars flush with valve surface. (F) Reproduction of illustration of N. anomala with lophophore filaments extended (from Barrett 1856). All scale bars 2 mm. Abbreviations: aasc, anterior adductor muscle scar; bwi, "batwing" shaped outline of organic ventral valve; dv, dorsal valve; fi, filaments; obisc, oblique internal muscle scar; opab, organic posterior adductor base; ovm, organic ventral mound; ovv, organic ventral valve; pasc, posterior adductor muscle scar; vv, ventral valve.