Answer :
Final answer:
Robust australopithecines exhibited specialized adaptations in their large posterior dentition and massive chewing muscles, indicating a diet consisting of hard foods like grasses and sedges.
Explanation:
Robust australopithecines had specialized dietary behaviors characterized by features such as large posterior dentition with thick enamel, thick enamel, flaring zygomatic arches, and massive chewing muscles. These adaptations were suited for grinding tough or hard foods like grasses and sedges. The megadonts and enamel hypoplasia were indicative of their diet and environmental niche.
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