. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. B Fig. 22. Kangnasaurus coetzeei Haughton. Right pedal ungual. A. Lateral view. B. Anconal view. Bar scale = 25 mm. 1969; Thulborn 1974; Taquet 1975) is incorrect (a conclusion independently reached by P. M. Galton, in litt., 1981). Kangnasaurus is readily distinguishable from Iguanodon (Hooley 1925) by its more gracile construction, sigmoidal femur with a shallow anterior intercondylar groove, and markedly different cheek teeth. Callovosaurus is based upon a femur (Galton 1980) whose greater trochan
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. B Fig. 22. Kangnasaurus coetzeei Haughton. Right pedal ungual. A. Lateral view. B. Anconal view. Bar scale = 25 mm. 1969; Thulborn 1974; Taquet 1975) is incorrect (a conclusion independently reached by P. M. Galton, in litt., 1981). Kangnasaurus is readily distinguishable from Iguanodon (Hooley 1925) by its more gracile construction, sigmoidal femur with a shallow anterior intercondylar groove, and markedly different cheek teeth. Callovosaurus is based upon a femur (Galton 1980) whose greater trochanter does not show the parasagittal expansion seen in Kangnasaurus, while its lesser trochanter is expanded transversely and separated from the greater trochanter by a deep cleft. The camptosaurid Muttaburrasaurus (Bartholomai & Molnar 1981) has a much more robust femur than Kangnasaurus, with a distinctly smaller lesser trochanter and a greater trochanter that does not show the parasagittal expansion of Kangnasaurus. Its maxillary teeth are also rather different with up to 13 fine, subparallel ridges on the labial surface, all of comparable strength. Kangnasaurus differs from Camptosaurus (Galton & Powell 1980) in the presence of an accessory (fibular) condyle to the tibia, a generally more sigmoidal and less robust femur, and in having its lesser trochanter closely adpressed to the greater trochanter. Thescelosaurus (Parks 1926; Galton 19746; Morris 1976) is a hypsilophodon- tid that has a much more robust femur than the South African genus, with the 4th trochanter extending on to a distal half of the shaft. In addition it has a relatively well-developed first pedal digit and a peculiar ankle arrangement (Morris 1976), in some species at least. In its closely adpressed lesser and greater trochanters and flat medial surface to the inner femoral condyle, Kangnasaurus is very similar to Hypsilophodon and both show 'high-spiked' dentary teeth. Hypsilophodon, however, diffe
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
