"By contrast, these types of ornaments were not found in the Baltic region of northern Europe. Rather, this area held on to decorative wear typically used by hunting and foraging populations—perforated shells rather than the beads or bracelets found in farming communities.

“It’s clear hunters and foragers in the Baltic area resisted the adoption of ornaments worn by farmers during this period,” Rigaud says. “We’ve therefore concluded that this cultural boundary reflected a block in the advancement of farming—at least during the Neolithic period.”"