The phylogenetic tree illustrated to the left is one interpretation of the relationships among the fossil species that may be our ancestors or relatives. Three genera of fossilized human relatives are designated by differing colors: Ardipithecus, Australopithecus, and Homo. Click the Next button to begin exloring each genus.

Click the button below to explore the content of the tutorial. Be sure to click the buttons along the top of the interactive diagram to see the other screens. When you've finished your exploration, simply close the pop-up window and proceed by clicking the 'next' or 'back' buttons.