Figure 30 in Comparative osteology and phylogenetic systematics of fossil and living bony-tongue fishes (Actinopterygii, Teleostei, Osteoglossomorpha)

Figure 30. Ventral elements of the gill arches and the basihyal shown in dorsal (= oral) and ventral views. A, Hiodon alosoides (UMA F10597, 62 mm SL). B, Xenomystus nigri (FMNH 69494, approx. 90 mm SL). C, Arapaima gigas (UMA F11261, 145 mm SL), gill rakers omitted from the right side. D, Pantodon buchholzi (FMNH 63752, 74 mm SL). Cartilage shown in black. Anterior facing left. Arrow indicates the position at which the hypohyals meet the basihyal/basibranchial skeleton. Illustration of ventral view of Hiodon modified from Hilton (2002: fig. 56).