The Smithsonian has an excellent, interactive, family tree for humanity that goes back 6 million years.
io9 has a neat image of key primate and homonid skulls that show the story of human evolution, and how we know about it.
![skulls](http://MontessoriMuddle.org/wp-content/uploads/2011/12/skulls-490x364.jpg)
Middle and High School … from a Montessori Point of View
The Smithsonian has an excellent, interactive, family tree for humanity that goes back 6 million years.
io9 has a neat image of key primate and homonid skulls that show the story of human evolution, and how we know about it.