FIGURE 1. A in The tadpole of the Swelled Vent Frog Feirana quadranus (Anura: Ranidae): Oral, chondrocranial and hyobranchial morphology

FIGURE 1. A, Tadpole of F. quadranus (Stage 36); B, ultrastructure of oral disc of a tadpole at Stage 36; C, labial teeth; D, the serrated edge of jaw sheaths; E, buccal roof anatomy; F, buccal roof papillae; G, buccal floor anatomy; H, medial ridge and postnarial papillae; I, tongue anlage; J, infralabial papillae and lingual papillae; K, dorsal view of the chondrocranium; L, ventral view of the hyobranchial apparatus. Abbreviations: A1-A8, upper labial tooth rows; P1-P3, posterior tooth rows; UJS, upper jaw sheath; M, mouth opening; LJS, lower jaw sheath; E, lateral emargination; MP, marginal papillae; SM, submarginal papillae; BS, basal sheat; B, labial tooth body; H, labial tooth head; JS, jaw sheath; na, internal nostril; bra, buccal roof arena; dv, dorsal velum; brp, buccal roof papillae; bfa, buccal floor arena; bfp, buccal floor papillae; lp, lingual papillae; bp, buccal pocket; vv, ventral velum; sc, suprarostral cartilage; ct, cornua trabeculae; ic, infrarostral cartilage; mc, Meckel's cartilage; ns, nasal septum; nt, nasal tectum; mp, muscular process; so, subocular bar of palatoquadrate; crf, craniopalatine foramen; oc, otic capsule; ch, ceratohyal; bb, basibranchial; pr, pars reunions; bh, basihyal; hp, hypobranchial plates; cb, ceratobranchial cartilages.