Which of the following is a primary difference between robust and gracile australopithecines?

Biology (MindTap Course List)
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Chapter22: The Evolution Of Primates
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Problem 7TYU: Some scientists now think that fossils identified as Homo erectus represent which two different...
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3. Which of the following is a primary difference between robust and gracile australopithecines?

 

robust australopithecines were makers of Olduwan tools while gracile australopithecines were not capable of making these tools.

 

gracile australopithecines generally have a larger cranial capacity than the robust forms.

 

gracile australopithecines have a sagittal crest while robust australopithecines do not have this feature.

 

robust australopithecines have large anterior (incisors) teeth while gracile australopithecines are characterized by small anterior teeth.

 

robust australopithecines are characterized by large molars marked by pits reflective of seed and nut eating while gracile forms have relatively smaller molars with slight scratches associated with a diet of fruits and grasses.

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