This is the first time that scientists have found a dinosaur with "lost" teeth, the Quagmire dragon, whose diet changed from omnivorous to herbivorous. These findings may provide important clues to the evolution of the beak. Current Biology 2016, 27, 144
Six ontogenetic stages (A-F) And major ontogenetic variation (G)
Using X-ray CT, the jaw of the Quagmire dragon was reconstructed and the missing tooth pattern of the adult Quagmire dragon was mapped
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