Dictionary of Ichthyology  

barbed bone point = a barbed point made of bone and bound to a spear shaft using twine wrapped around grooves on the bone.
Casts of a barbed bone points from Katanda, Congo, 70-90,000 years old, Smithsonian Institution, Washington, D.C. Photograph by Brian W. Coad.

Canadian Museum of Nature
www.briancoad.com