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What gives a tuatara its beaklike snout?
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tuatara
The species is the sole living member of the reptile order Rhynchocephalia.
The tuatara's beaklike snout is caused by the presence of fused, toothless premaxillary bones. This unique feature is a result of the replacement of premaxillary teeth with this bony, beaklike extension, a characteristic that distinguishes the tuatara from its relatives in the order Squamata.1