https://phys.org/news/2018-11-chile-british-museum-extinct-mammal.html

"We hope to have talks with the museum authorities... and seek to repatriate the mylodon's remains; these are bones and skin that are in storage, not even being exhibited," Ward told reporters.

The remains of the mylodon were taken to Britain in 1897 for research but were never returned to Chile, according to officials.