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| | The Antiquity of Man Black Skull |
 | | aethiopicus distinction is more accepted today, as well as by the initial postulators and advocates of Hypothesis Four, because of the contemporary rejection of the idea of a gradual evolutionary increase in robusticity with A./P. |
 | | Hypothesis Five's support of the polyphyletic distinction of Paranthropus along with extensive parallelisms, as well as Kimbel, White and Johanson's advocacy of the latter, was met with response to prove its impropriety, causing much cladistic analyzation of the 'Black Skull' in efforts to make a more parsimonious phylogenetic tree. |
 | | A. aethiopicus developed "an emphasis on the masseter as the main chewing muscle, with a primitive retention of the emphasis on the posterior temporalis," while A. |
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