Some bones show cut marks. The study of the ivory began ... low hardness and fragility,” Stepanchuk explained. “Small ivory tools are far less efficient than stone tools of similar size.

Additionally, ivory is a relatively soft material, especially compared to stone—too soft, at this size, to be used for cutting ... techniques for creating tools out of other materials—like ...

Six of these displayed evidence of knapping. Previously, the earliest known ivory tools were thought to have been made 120,000 years ago. The experts were somewhat perplexed by the finding of ...