| 11. | Sagittal crests are found in robust great apes, and some early hominins ( " Paranthropus " ).
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| 12. | There, it may be attached to a sagittal crest, as can be seen in early hominins like Paranthropus aethiopicus.
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| 13. | True to its name, " Paranthropus robustus " had a more massive jaw and teeth than Homo species.
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| 14. | Sometime after 3 million years ago, it branched into two lineages _ strong-jawed Paranthropus and big-brained Homo.
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| 15. | However, that specimen is now formally known as " Paranthropus robustus " and the earlier name is a junior synonym.
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| 16. | "Paranthropus robustus " is generally dated to have lived between 2.0 and 1.2 million years ago.
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| 17. | At around that time Paranthropus, presumably unable to survive a more hostile environment, died out, leaving the field to Homo erectus.
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| 18. | However, if these species do constitute their own genus, they may be given their own name, " Paranthropus ".
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| 19. | In the 1930s, when the robust specimens were first described by Robert Broom, the " Paranthropus " genus was used.
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| 20. | Fossil sites found on " Paranthropus robustus " are found only in South Africa in Kromdraai, Swartkrans, Drimolen, Coopers.
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