The upper dentition, based on socket size, is slightly heterodont, with smaller premaxillary teeth and larger maxillary teeth. |
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In theropods, the absence of strongly heterodont dentitions such as are typical of omnivorous mammals might reflect the limited resources that were available. |
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Therapsids tended to evolve a specialized heterodont dentition and to improve the mechanics of locomotion by bringing the plane of action of the limbs close to the trunk. |
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