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partly, as anchors for the keratinous portion of the beak. Such structures are present in many ornithischians, save for taxa such as Dryosaurus or Zalmoxes. In at least T. dossi, the predentary had a process on its ventral (bottom) surface which overlapped with the mandibular symphyses.' The dentaries (the tooth-bearing portions of the lower jaw) were robust.'

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