. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 82 ANNALS OF THE SOUTH AFRICAN MUSEUM Incisors Both premaxillaries carry five functional incisors. The No. i pair are smaller teeth lying close together. On the left side the inner alveolar wall is fenestrated behind Nos. i, 3, 4 and 5, and in each pocket lies the crown of a replacement tooth, triangular in outline and with its inner face striate. The replacement order is 5, 1, 3, 4, 2. In the dentaries four incisors are preserved on the left side and three on the right side—No. 1 being lost. No repl
. Annals of the South African Museum = Annale van die Suid-Afrikaanse Museum. Natural history. 82 ANNALS OF THE SOUTH AFRICAN MUSEUM Incisors Both premaxillaries carry five functional incisors. The No. i pair are smaller teeth lying close together. On the left side the inner alveolar wall is fenestrated behind Nos. i, 3, 4 and 5, and in each pocket lies the crown of a replacement tooth, triangular in outline and with its inner face striate. The replacement order is 5, 1, 3, 4, 2. In the dentaries four incisors are preserved on the left side and three on the right side—No. 1 being lost. No replacements have been exposed. 19. Jonkeria vanderbyli. 11884. A = ventral view of the palate. B = anterior view of the snout. This specimen again very clearly shows the intermeshing of the upper and lower incisors. The pair of slender upper Nos. 1 having their talons passing in between the lower Nos. 1, with the outer halves of their heels meeting the inner halves of the heels of the lower incisors; upper No. 2 passes between lower Nos. 1 and 2, and No. 3 between 2 and 3; No. 4 between 3 and 4, and No. 5 between lower 4 and lower canine. Canines The upper canines are large, pointed and curve backwards. The length of the crown is at least 90 mm. and the basal diameters are right 49 X 36 mm. and left 45 x 34 mm. In the pockets lingual of each canine lies the tip of the replacing canine. The lower canines are smaller than the upper and are directed forwards and outwards. The basal diameters are right 29 X 27 mm. and left 27 X 27mm., and the lengths 50 mm. and 45 Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original South African Museum. Cape Town : The Museum
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
