Archaic H. sapiens Zambia Modern H. sapiens Ethiopia 160,000 ybp 300,000 ybp.
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Transcript of Archaic H. sapiens Zambia Modern H. sapiens Ethiopia 160,000 ybp 300,000 ybp.
Early modern humans more robust than present populations fromthe same regions
Zhoukoudian, China29,000 ybp
Lothagam, Kenya9,000 ybp
Dwarfism and Gigantism on Islands
• Not universal but fairly common• Natural selection
– Dwarfism: food energy constraint– Gigantism: availability of large prey
2003 Skeleton Discovery
• Unearthed a skull, jaw, pelvis, and leg bones.• Bones from an adult female.• Homo erectus-like features (sloping forehead, arched
brow ridges, but much smaller.• Smallest brain of genus Homo
– 1/3 size of modern humans.• Specimen was radiocarbon and luminescence dated
at about 18,000 years old.
Two dating methods: 35,000 – 18,000 ybp
Brain smallerthan that of smallestAustralopithcines
380-420 cc
Homo floresiensis reported in 2004