At Foradada Cave in northeast Spain, Neanderthal fossils lie mingled with stone tools and animal bones. Here, archaeologists recently unearthed the tip of a 39,000-year-old eagle toe with its claw missing. The phalanx (toe bone) came from the end of a Spanish imperial eagle’s big toe (the left one, to be exact), and cut marks along the length of the bone suggest that someone had cut off the large, curved talon at the end of the toe.

Archaeologist Antonio Rodriguez, of the Institute of Evolution in Africa, and his colleagues suggest that the missing talon ended up on a Neanderthal necklace.

The case of the missing jewelry

Along the top side of the toe (a proximal phalanx, if you’re an anatomy fan), 11 deep cut marks run diagonally across the bone; a shallower twelfth cut crosses the others, parallel with the bone’s length. Under the microscope, the cuts have v-shaped cross-sections, leaning to one side—the signature shape of tool-made cuts rather than predator teeth or damage from scraping against rocks or other bone. In fact, the cuts look almost exactly like the marks archaeologists left behind when they used stone tools to separate a raptor’s claw from its toe (because of course they did, for science).