Dissected bones.
UNICTIO 2600, 28.3 mm SL: (A) suspensorium and operculum of Corydoras undulatus. Lateral view. Abbreviations: aa = angle-articular, d = dentary, hym = hiomandibula, iop = interoperate, mp = metapterigoid, op = opercle, pop = preopercle, q = quadrate; (B) pectoral girdle of Corydoras undulatus. Ventral view. bpr = pectoral-fin ray, cl = cleithrum, fab = fossa of the abductor muscles of pectoral fin, pecs = pectoral-fin spine, pr = pectoral radials, sco = scapulocoracoid; (C) caudal-fin skeleton of Corydoras undulatus. Lateral view. ccc = compound ural centrum, cfr = principal rays, epu = epural, has = haemal spine, hyp = hypurals and parhypural, hypu = hypurals and uroneural, nes = neural spine, pcr = procurrent rays, ph = parhypural, pu2-3 = preural centrum. Scale bars = 1.0 mm.
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