Thesis (Ph. D.)--Universität Zürich, 1993.

A dissertation submitted to the Faculty of Science, University of the Witwatersrand, in fulfilment of the requirements for the higher degree of Doctor of Philosophy. July, 2016. / Fossil primates are some of the most well represented fauna in South Africa’s fossil Plio-Pleistocene cave sites. Sterkfontein preserves the largest number of fossil primates and a large portion of these are cercopithecoid remains. This research project provides a taxonomic analysis of the abundant fossil cercopithecoid post-cranial limb elements discovered at the site. One thousand five hundred fourteen identifiable fossil cercopithecoid postcrania from the Sterkfontein caves are analysed. From these, five genera are identified from morphologically diagnostic postcranial elements; these are Papio, Parapapio, Theropithecus, Cercopithecoides and Cercopithecus. Theropithecus is identified in Member 4, earlier than previously known. It is established that size, form and function are important factors in taxonomic studies. They play a major role in taxonomic examinations; however, they cannot be treated as disconnected facets of a taxonomic exercise. Each plays an essential role in taxonomic analyses. The study confirms that the Member 4 environment, which illustrates the turn from the Pliocene to the Pleistocene and the most mosaic of all the Plio-Pleistocene sites of the Cradle of Humankind World Heritage Site, samples the most faunal variability in the Sterkfontein Cave deposits. This research supports the hypothesis that carnivores were not the main accumulating agent for the cercopithecoid fossil remains within the caves. The carnivores, however, impacted the fossil cercopithecoid assemblage. Leopards and hyaenas are identified as some of the carnivores which accumulated the fossil cercopithecoids within the Sterkfontein caves. The research has opened a new scope for taxonomic analysis of isolated fossil cercopithecoid postcrania in the southern African fossil cave sites. / LG2017

A thesis submitted to the Faculty of Science, University of the Witwatersrand, Johannesburg, in fulfilment of the requirements for the degree of Doctor of Philosophy. Johannesburg 1994. / This thesis presents an :investigation into the functional morphology and form of the skeletal elements of" the shoulder girdle of extant h0111inoids and extinct hO)ll.inids\~hich inhabited the Afr:i.c~n continent during the Late pliocene and Elarly \Ii Ii \Ii, ill Partic'l.l.lcu: emphasis is placed o\~\the \' i\. form of the scapula, clavicle and humerus. \Ii variation in the bony, arthrological and 41.yoloQif\;Lcal I" anatomy' Of this region in extant hominoids is I Pleistocene. examined. In light of biomechaniq~l models II reSUlting from this work, the bony,;anatomy of u hominid shoulder girdle elements examined and i. .1 r;:I~t>. ssil .1,1 . " biomechanical interpretations are made. The fossil shoulder girdle elements exan\ine~ in this study are grouped into four species samples. The first sample (Australopithecus a.:friCaIlUS) comprises Pliocene ,fossils from sterkfontein, South Africa. 'rhe second sampJ.e (A. afarelJ.si.s) i.s comprised of fossilo front Hadar, Ethiopia. The third (Homo habilis) and, fourth (ii. boisei) samples comprise fossils from C'lduvai GorgeI Ta:nzania, Koobi For~ll, Ke!nya and t.ne omo Valley ~ Ethiopia. When the t!;ossil homi.ndd. remains are scrt.ed into specf.ea, jl~heI:;houlder g;l.rdle elements InelYd:>e used to const.zuct; and contrast specd.es specijSiq '1· . ) bitOmechar1,ic::aml odelS of th~ shoulder. Th~~se models e:>fltP10re differernoes in form amon~,r.;tj;ossil hominid. species that may'be reJ,ated to dii.:;eetenc;:.es in behaviour. The models may also be appU.ed to the :~......,..~ interpretation of systemat.ic relationShips amongst early hominids. In o:(.~ierto construct models of early homi:p,ids it is first necessary to establish the,movement, myology and oste0logy of the extant hominoid shoulder. Chapters 4,5 and 6 sUl'l.1Il1ar~n,$eew data and available in,formation concel:"ning shoulder girdle mo.Jementand form. Chapter 7 presents detailed C';escriptiQns Of the fossil hominid ma.terial (u:::::19) available for study. 'rhis descriptive information, in conibination with all of the information derived from Chapters 4 through 6, is then used to inte1.pret, compaxe and contrast the fu.nctional morphology Of the shoulder girdle elements of each species of early hotninid. pa:q:ticuJ.ar emphasis is placed .on those features that cart be. directly related to specific :functiOl'l~ Model.s ,,.l the functional morphology of each of t1Je four species are then created. comparisons are made between indJ.vidual Shoulder girdle elements 'cg,fthe different homj.nid spacd.es as well as between the interpreted total morphology of each species' shoulder girdle. The study concludes that the functional m~>l':phologyof the shoulder girdle Qf A. afriaanus is unique ~unorJ.gstknown hominoic1~mode'l.s in that it poasesaes shoul<;ier girdle mo;t,'ph.oo.)gy adapted to bobh suspen ory behaviour and bipE~d;;d~i.srn. TIte suspensory adaptations are :Lndi9ated by the overall ape ..like morphology of the humeri, claviculae and heCid.of the scapulae, whilst bipedalism is mainly (J G indicated. by a broad, human-like inf.Ell:'ior'an9,'].eof " = the scapula. Several' RpparentlY prim.itive featu:r:es" are present in,..the A. africanus Ejcapl,1la,incl~dirtg a 0i,? ..... . _ .. '. \ shortened scapular 'n~ck, that ind:l.Cate'-\poss~ple ancestry f.roma quadru:pedal form. ~p.e functi<:>tJ.al. morphology of the A. afarens.ts shoulder is founa .to be more diffi.cult to interpret d'.le to poor f(i:; ,pre.~ervationt but the hypothesised znodel'~does not diffe):: substantially from th~t constructed for A. _c,~) . ..' .', 1) (; a£ricanus. The few robust aURtra.lopithecine,.,(A. boi.se:1) sho~~der girdle elements appear to possess ~,.. similar morpJ;lologi.esto A. a.:falyrnsis and )1- africanus. There ara .no'l:.SUfi:'lc:tently well preServedoH. habili.s shoulder girdle elements preserved to 'makemeffilningfulinterpreta.tions about the functional morphology of this, specie~:' .' n the lack of comparable elements amongst the two (I 1arger samples (...21.. a:faJ;'ensi.s and ,fl. arr:J;canus) I .it '..':::/ is not knownwhether the features found to be apparently unique to either species are useful as n taxonomic indicators.