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"Palatal view of skull of Ceratodus." — Encyclopedia Britannica, 1893

Ceratodus

"Palatal view of skull of Ceratodus." — Encyclopedia Britannica, 1893

Illustrating the relationship of the lateral incisor tooth to the palatal cleft. A, Normal hard palate. The premaxilla is stippled; the lateral incisor occurs in the suture between it and the maxilla. B, Double cleft palate, the lateral incisor being situated on the premaxilla to the inner side of the cleft. The septum of the nose is exposed in the cleft between the maxillary bones. C, Double cleft palate, the lateral incisor being situated on the maxilla to the outer side of the cleft.

Incisor Relation to Palatal Cleft

Illustrating the relationship of the lateral incisor tooth to the palatal cleft. A, Normal hard palate.…