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Average growth is one foot per year for the first six years. The whole body is covered with large, strong, ossified, horny plates. The large strong jaw has 80 teeth, they do not chew. Often lose teeth in encounters with prey but they are quickly replaced. Each tooth contains a small replacement tooth within its pulp cavity and examination sometimes reveals a further tiny tooth ready to erupt within that. The tongue is fused to the floor of the mouth and can hardly move.

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17y ago

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