Ancient Mini Kangaroos Had No Hop, They Scurried

In a recent study, researchers described a new kangaroo genus, Cookeroo, and two new species: Cookeroo bulwidarri, dated to about 23 million years ago,and Cookeroo hortusensis, which lived between 18 million and 20 million years ago. Both species were found at the Riversleigh World Heritage area in northwestern Queensland, Australia, a location recognized as one of the richest fossil deposits in the world, according to the United Nations Educational, Scientific and Cultural Organization (UNESCO)