Lesson 27: The Evolution of

Hominids The  great  ri*  valley  

What  you    need  to  be  able  to  do:  

SC.912.L.15.10    

Iden6fy  basic  trends  in  hominid  evolu6on  from  

early  ancestors  six  million  years  ago  to  modern  humans,  including  

brain  size,  jaw  size,  language,  and  manufacture  of  tools.  

Homo  Sapiens:  

Who  are  we?  

•   Homo  “man”  sapiens  “being”  

Where  did  we  originate?  •   Africa  1st  found  fossils    

Fossil  evidence  supports    origins  in  Africa  

Great  Ri2  Valley   Map  of  hominid  fossils  found  

Hominid  cladogram  

Missing  fossils  in  6meline  

Stone  tool  manufacturing  

Homo  genus  originates  

Common  ancestor  

Changes  in  skull  shape  led  to  advanced  intelligence  

Changes  in  brain  size  

Skeletal  changes  support  bipedalism  

Language  acquisi6on  

Tool  usage  and  advancements  

Changes  in  denFFon  due  to  changes  in  diet  

How  fossils  are  formed  and  found  

RefrigeraFon,  DesiccaFon,  Asphalt,  and  Amber  

Some  reliable  sources  of  informa6on  

•  hNp://www.pnas.org/content/97/25/13506.full  

•  hNp://www.nature.com/ejcn/journal/v56/n12/full/1601646a.html  

•  hNp://www.newarchaeology.com/ar6cles/earlyhom.php  

•  hNp://www.ncbi.nlm.nih.gov/pubmed/8079169  •  hNp://www.pbs.org/wgbh/evolu6on/  

•  hNp://www.pbs.org/wgbh/nova/evolu6on/becoming-­‐human.html  

•  Mutant  Planet:  Great  Ri*  Valley  Lakes  

•  hNps://www.amazon.com/gp/video/library?ie=UTF8&ref_=sv_mov_aiv_4    •  Nova  “Becoming  Human”  

•  hNp://video.pbs.org/video/1312522241/