. Breviora. . re 1. Platybelodon sp. Tusk fragment, NICY field number 3S-f>4K. from the Loperoi area, Kenya, a, view; horizontal line indicates plane of section, ft, Nnterior view of cut surface. Shaded area, investment of laminated dentine. • 1. The broken ends reveal a complex internal structure of dentine organized into dentinal system^ or rodlike masses as in most other amebelodonts. although they have not weathered out as discrete and isolated rods, such as those described in Platybelodon grangeri (Osborn and Granger. 1931) and Amebelodon jricki (Barbour. i941 ). In thin sectio
. Breviora. . re 1. Platybelodon sp. Tusk fragment, NICY field number 3S-f>4K. from the Loperoi area, Kenya, a, view; horizontal line indicates plane of section, ft, Nnterior view of cut surface. Shaded area, investment of laminated dentine. • 1. The broken ends reveal a complex internal structure of dentine organized into dentinal system^ or rodlike masses as in most other amebelodonts. although they have not weathered out as discrete and isolated rods, such as those described in Platybelodon grangeri (Osborn and Granger. 1931) and Amebelodon jricki (Barbour. i941 ). In thin section (Fig. 2). the dentine has a fibrous texture, consisting of numerous microscopic dentinal tubules. These tubules 5 The term dentinal system was restricted by Tomes (1850) to that portion of a tooth consisting of a canal from which dentinal tubules radiate and around which there is no investment of 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. , Museum of Comparative Zoology, Harvard University
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