A phylogenetic tree is a graphical means to depict the evolutionary relationships of a group of organisms. The phylogenetic tree below shows one reconstruction of the relationships among early human species, as we best know them today. It is a clickable image map. To go to a species page, click on the bar below the species name, or you can choose from the text links below. The question marks in red signify debated phylogenetic (ancestor/descendent) relationships of early humans. Click on these to view a page detailing the debate. At each page you can learn about the species you chose. Follow further links to any of the fossil specimens shown to learn more about specific finds.