During the early Paleocene, about 66 to 56 million years ago, a species of small mammal known as Mixodectes pungens […] ...

New discoveries shed light on an ancient human species and its evolutionary links to modern humans. Stephen Chester, ...

It also shows that these arboreal mammals—an extinct family known as mixodectids—and humans occupy relatively close branches on the evolutionary tree. "A 62-million-year-old skeleton of this ...