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Fig. 4. Sagittal section of the tongue of Phrynomantis bifasciatus. (A)
Note that the fibers of the m. genioglossus dorsoventralis are directed
longitudinally and then dorso-ventrally. (B) Magnified view of the m.
genioglossus dorsoventralis. Single fibers run in both the longitudinal and
vertical planes. d, dentary; gh, m. geniohyoideus; ggdv, m. genioglossus
dorsoventralis; ggl, genioglossus longitudinalis; h, hyobranchium; hg, m.
hyoglossus; im, m. intermandibularis; ggt, m. genioglossus transversalis; m,
mucosal layer. Scale bar, 1 mm.