BiologyWise
Biology Wise: A Comparative Analysis: Homo Habilis vs. Homo Erectus
Describes Homo habilis and Homo erectus, two early ancestors of humans. Discusses how they were discovered, their characteristics, and what we know about them, with the information clearly laid out in a chart along with some comparative...
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Washington State University: Hominid Species Timeline
This complete resource contains a chronological chart that shows the main hominid species and their approximate relationships in time. A description of each hominid is included as well.