The Ishango bone is a bone tool, dated to the Upper Paleolithic era. It is a dark brown length of bone, the fibula of a baboon, with a sharp piece of quartz affixed to one end, perhaps for engraving.
Ishango bone - Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Ishango_bone
He [Jean de Heinzelin de Braucourt] gained international fame in 1960 when he discovered the Ishango Bone. Wikipedia
Explore: Jean de Heinzelin de Braucourt
Tally sticks first appear as animal bones carved with notches, in the Upper Paleolithic; a notable example is the Ishango Bone. Wikipedia
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Alexander Marshack examined the Ishango bone microscopically, and concluded that it may represent a six-month lunar calendar; but see Judy Robinson who argues that Marshack overinterprets the data and that the evidence does not support lunar calendars. Wikipedia
Explore: Alexander Marshack
Ishango bone - Wikipedia, the free encyclopedia
https://en.wikipedia.org/wiki/Ishango_bone
The Ishango bone is a bone tool, dated to the Upper Paleolithic era. It is a dark brown length of bone, the fibula of a baboon, with a sharp piece of quartz affixed to one end, perhaps for engraving.
The Ishango Bone: Craddle of Ancient Mathematics | African Heritage
https://afrolegends.com/.../the-ishango-bone-craddle-of-mathematics/
Aug 29, 2013 ... Dating as far back as 22000 years ago, in the Upper Paleolitic era, the Ishango bone is a dark brown bone which happens to be the fibula of a baboon, with a sharp piece of quartz affixed to one end for engraving.
Ishango Bone - Mathematics Department of SUNY Buffalo
www.math.buffalo.edu/mad/Ancient-Africa/ishango.html
Ishango Bone -- from Wolfram MathWorld
mathworld.wolfram.com/IshangoBone.html
The Ishango bone is the oldest known object containing logical carvings. It was
discovered in the Congo, and has been dated to be 22000 years old. The middle
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