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Lecture

Early Homo

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Department
Anthropology
Course
ANTC17H3
Professor
Genevieve Dewar
Semester
Winter

Description
Review EarlyHomo - Stagesofhumanevolution March-07-12 ○ Bipedalism 1:09 PM East AfricanFossilSites ○ Tooluse DiscoveryofHomo Specimens - Difficultyinidentificationiftheyare ○ Brainsizeincrease(correlationtodiet) - Darwin'swriting,OntheDescentofMan ○ Similartooneanother ○ Justchangingspecies ○ PointstoAfricatofindourancestry - OlduvaiGorge HominidBrain and MeatConsumption  TwoapesinAfricaand onlyonein Indonesia ○ 1959, DearBoy [OH5] (P.Boisei) - Increaseinbrainsizecorrelateswithappearanceof toolsandthen  Notacceptedbyeveryone:thought  Wenttobedtwo meatinthehominindiet  Constrictionbehindeyes,contrastedwith - Humanbrainconsumesmorethantwicetheenergyofthebrains thatwewerecloserrelatedto many Orangutans(physiologically) ofnon-humanprimates - FossilAncestorsIndonesia ○ NextseasonfoundTwiggy [OH24](H.Habilis) - Alsoinfluencedbythesevereclimacticchangeandadaptive ○ Indonesia:Haekle-Anatomistlookingto  Olderthan2my radiation  Precisiongripofhands,biggercomparative - Situationinwhichtherearecarcasseseasilyaccessible,usedtools find'missinglink'inFarEast  StudentwasnamedDubois brainsize toaccessmarrow inlongbones □ Gotonto thetripby becoming  Significantlylesspost-orbitalconstriction; - Linkstotooldevelopment ananatomist,tookapostat a pre-frontalcortextexpansion ○ Problemsolvers:Widercognition ○ Comparison ○ Toolmanufacturing:emphasixingmanualdexterityandfine militaryhospitalinIndonesia, eventuallybeganlookingfor  Habilis=smaller,butbiggercomparative manipulation,sourcingofhigh-qualityfinegrainedtools fossils brainsize ○ Abstractideasbecauseoftheprocessinvolvedinmaking  Boisei=moreprimitivetraits,butcloserto tools ○ IndonesiaRemains h.erectus OriginofLanguage  Calvaria(Skullcap)andfemur  Notfoundinthesameplace - WhyHabilisishomo - Linkedtoculture  Femurindicatesbipedalism,skull ○ Hallmarksofmodernhomos: - Moderndayexamples:  Largeinscisorsandcanines,smallermolars ○ Gesturesandcallsbyprimates;allhominidspecieswould remainsindicatesalargebrain □ Moregeneralized,abletoeatthings havesimilarpotential  Called'JavaMan';homo erectus ○ Europeanremains likemeat - TerrenceDeacon:Saidthattheexpansionofthepre-frontal  NeanderthalensisinFranceand  Lacksa saggitalcrest cortextlinkstosymboliccommunicationandfinemotormuscle  Needsmeatandhighqualityproteinto movement Germany sustainbrain - L-ShapedVocaltract  Then,PiltdownMan □ Foundpiecesofskullsaswell ○ WhynotH. Erectus ○ Potentialfordevelopmentcomeswithbipedalism asamandiblethatwas  Brainismuch smallerthanerectus ○ Larynxlowinthroatallowingforthepronounciationof  Longarms andshort legs;not100% bipedal complexsounds missingthecanines □ Indicationsofalargebrain likeerectus - Inferencesmade caseanda largejawwithvery  Somethingsthatareconsideredmore ○ Pre-frontalcortexexpansion moderndentitiion primitivethanAustralopithecines  Finemotormusclemovement  Symboliccommunication □ Completefraud SouthAfrican FossilSites  Dentitiondidn'twork  Potentialforspeech functionally,large - Mostlyfoundincavedeposits ○ Toolsindicatethatthemotormusclemovementisagood - StW53 hypothesis ca
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