Editing Homo habilis (section)

===Skull===
[[File:Homo habilis - forensic facial reconstruction.png|thumb|left|upright|''Homo habilis'' – forensic facial reconstruction]]
It has generally been thought that brain size increased along the human line especially rapidly at the transition between species, with ''H. habilis'' brain size smaller than that of ''H. ergaster''&nbsp;/&nbsp;''H. erectus'', jumping from about {{cvt|600–650|cc}} in ''H. habilis'' to about {{cvt|900–1000|cc}} in ''H. ergaster'' and ''H. erectus''.<ref name=Spoor2015/><ref name=Tobias1987/> However, a 2015 study showed that the brain sizes of ''H. habilis'', ''H. rudolfensis'', and ''H. ergaster'' generally ranged between {{cvt|500–900|cc}} after reappraising the brain volume of OH 7 from {{cvt|647–687|cc}} to {{cvt|729–824|cc}}.<ref name=Spoor2015/> This does, nonetheless, indicate a jump from australopithecine brain size which generally ranged from {{cvt|400–500|cc}}.<ref name=Tobias1987>{{cite journal|first=P. V.|last=Tobias|year=1987|title=The brain of ''Homo habilis'': A new level of organization in cerebral evolution|journal=Journal of Human Evolution|volume=16|issue=7–8|pages=741–761|doi=10.1016/0047-2484(87)90022-4}}</ref>
{{Human timeline}}
The brain anatomy of all ''Homo'' features an expanded [[cerebrum]] in comparison to australopithecines. The pattern of striations on the teeth of OH 65 slant right, which may have been accidentally self-inflicted when the individual was pulling a piece of meat with its teeth and the left hand while trying to cut it with a stone tool using the right hand. If correct, this could indicate right [[handedness]], and handedness is associated with major reorganisation of the brain and the [[lateralisation of brain function]] between the left and right hemispheres. This scenario has also been hypothesised for some Neanderthal specimens. Lateralisation could be implicated in tool use. In modern humans, lateralisation is weakly associated with language.<ref>{{cite journal|first1=D. W.|last1=Frayer|first2=R. J.|last2=Clarke|first3=I.|last3=Fiore|display-authors=et al.|year=2016|title=OH-65: The earliest evidence for right-handedness in the fossil record|journal=Journal of Human Evolution|volume=100|pages=65–72|doi=10.1016/j.jhevol.2016.07.002|pmid=27765150}}</ref>

The tooth rows of ''H. habilis'' were V-shaped as opposed to U-shaped in later ''Homo'', and the mouth jutted outwards (was [[prognathic]]), though the face was flat from the nose up.<ref name=Spoor2015>{{cite journal |author1=F. Spoor |author2=P. Gunz |author3=S. Neubauer |author4=S. Stelzer |author5=N. Scott |author6=A. Kwekason |author7=M. C. Dean | year = 2015 | title = Reconstructed ''Homo habilis'' type OH 7 suggests deep-rooted species diversity in early ''Homo'' | journal = Nature | volume = 519 |issue= 7541 | pages =83–86 | doi= 10.1038/nature14224 | pmid=25739632 | bibcode=2015Natur.519...83S|s2cid=4470282 }}</ref>