Different in degree or kind: hands (Introduction)

by David Turell , Tuesday, December 17, 2013, 14:34 (3782 days ago) @ David Turell

Human hands are capable of complex actions that apes cannot do. Our hand motor area in the brain is many times larger than the ape area. that type of hand seesm to go back 1.4 million years:-Humans have a distinctive hand anatomy that allows them to make and use tools. Apes and other nonhuman primates do not have these distinctive anatomical features in their hands, and the point in time at which these features first appeared in human evolution is unknown. Now, a University of Missouri researcher and her international team of colleagues have found a new hand bone from a human ancestor who roamed the earth in East Africa approximately 1.42 million years ago. They suspect the bone belonged to the early human species, Homo erectus. The discovery of this bone is the earliest evidence of a modern human-like hand, indicating that this anatomical feature existed more than half a million years earlier than previously known.
 
Read more at: http://phys.org/news/2013-12-discovery-million-year-old-fossil-human-bone.html#jCp