Archaeologists in Brazil say they have unearthed 25,000- to 27,000-year-old pendants made of bony material from the extinct giant ground sloth Glossotherium phoenesis. An artist’s impression of the Santa Elina rock shelter, Brazil. Image credit: Júlia D’Oliveira. “Most Pleistocene megafauna — mammals with body mass greater than 44 kg — became extinct worldwide by the Pleistocene-Holocene transition,” said senior author Dr. Mírian...