The elasmobranch fishes (1934) The elasmobranch fishes elasmobranchfish03dani Year: 1934 Fig. 128. Median view of teeth in jaws, Heterodontus francisci. (Duncan Dunning, del.) which have characteristics of both. The teeth in the sixth row from the front are flattened out and are provided with cusps essentially like the pavement teeth of Miisielus henlei. The finer structure of a tooth (fig. 129) is somewhat similar to that of a scale. In both there is an outside harder cap usually of structureless enamel (e.) over a heavier inside layer of dentine. The enamel in some teeth is of a coarse gi'a

GLIX-115-RWPME6

The elasmobranch fishes (1934) The elasmobranch fishes elasmobranchfish03dani Year: 1934  Fig. 128. Median view of teeth in jaws, Heterodontus francisci. (Duncan Dunning, del.) which have characteristics of both. The teeth in the sixth row from the front are flattened out and are provided with cusps essentially like the pavement teeth of Miisielus henlei. The finer structure of a tooth (fig. 129) is somewhat similar to that of a scale. In both there is an outside harder cap usually of structureless enamel (e.) over a heavier inside layer of dentine. The enamel in some teeth is of a coarse gi'a
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The elasmobranch fishes (1934) The elasmobranch fishes elasmobranchfish03dani Year: 1934 Fig. 128. Median view of teeth in jaws, Heterodontus francisci. (Duncan Dunning, del.) which have characteristics of both. The teeth in the sixth row from the front are flattened out and are provided with cusps essentially like the pavement teeth of Miisielus henlei. The finer structure of a tooth (fig. 129) is somewhat similar to that of a scale. In both there is an outside harder cap usually of structureless enamel (e.) over a heavier inside layer of dentine. The enamel in some teeth is of a coarse gi'a

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