Capuchin monkeys’ stone-tool use evolution

This June 2018 video says about itself:

White-faced capuchin (Cebus capucinus imitator) stone tool use in Coiba National Park, Panama

Higher Quality Supplemental Video from the paper “Habitual stone-tool aided extractive foraging in white-faced capuchins, Cebus capucinus.” Currently up on BioRxiV as a preprint and in peer review.

Preprint available here.

By Bruce Bower, 11:00am, June 24, 2019:

Capuchin monkeys’ stone-tool use has evolved over 3,000 years

A Brazilian site shows the animals’ long history of selecting various types of pounding devices

Excavations in Brazil have pounded out new insights into the handiness of ancient monkeys.

South American capuchin monkeys have not only hammered and dug with carefully chosen stones for the last 3,000 years, but also have selected pounding tools of varying sizes and weights along the way.

Capuchin stone implements recovered at a site in northeastern Brazil display signs of shifts during the last three millennia…