A summary of the accepted species of human that lived on this planet from as far back as 2.5 Ma.

Source Files:

Homo sapiens sapiens: http://upload.wikimedia.org/wikipedia/commons/4/4c/Homo_sapiens.JPG
Homo floresiensis: http://upload.wikimedia.org/wikipedia/commons/1/10/Homo_floresiensis.jpg
Homo neanderthalensis: http://upload.wikimedia.org/wikipedia/commons/9/95/Neandertaler-im-Museum.jpg
Homo heidelbergensis ( includes Homo rhodesiensis & Homo cepranensis): http://upload.wikimedia.org/wikipedia/