In 2005, researchers described what they believed to be a new family, genus, and species of rodent. It was a delightfully adorable discovery in the realm of squirrel research, but hardly Pulitzer ...

The long-whiskered rodent with stubby legs and a tail covered with dense hair resembles them all but has turned out be a previously unknown species that actually represents an entire new family of ...

We looked at 433 of those genus groups from all across the rodent family tree," says Anderson Feijó, the Field Museum's curator of mammals and an author of the study. The team found that of the genera ...

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Researchers (left to right) Gordon Shepherd, Anderson Feijó, Lauren Johnson, and Rafaela Missagia, working in the Field Museum’s mammal collections. Picture a squirrel eating an acorn. It’s holding ...