CMS 



Figure 22: Norma verticalis of Olduvai hominid 16. This badly smashed 

 calvaria has been reconstructed from 107 fragments. The temporal crests 

 have been indicated; they do not reach the middle line. 



elongate fragment, which betrayed its true identity, namely part of the right 

 temporal bone. The removal of the offending fragment permitted a better 

 alignment to be effected between the left frontal and left parietal parts (Fig- 

 ure 21): this converted the whole vault into a short ovoid, or even spheroid, 

 vault, as seen in norma verticalis (Figure 22). It resulted, too, in a maximum 

 glabello-occipital length of only 144 mm., that is, 15 to 16 mm. shorter than 

 the earlier reconstructions. The general "pithecanthropine" resemblance, 

 suggested by the first reconstructions— and which had led Leakey (1966) to 

 speak of it as "protopithecanthropine"— likewise largely disappeared. 



The final reconstruction incorporates 29 fragments of the frontal, 25 of 

 the left parietal, 42 of the right parietal, and 1 1 of the occipital. 



The reconstructed vault was smoothed off interiorly with plasticine, 

 along a curved line corresponding closely to the lower margins of the parie- 

 tals and passing through the cerebellar fossae at about the level of the pos- 

 terior intraoccipital synchondrosis. The transverse limb of the cruciate 



77 ^ 



