NEW ON THE WEB125-million-year-old cretaceous ‘furball’ is oldest known mammalksl.com A rodent-like specimen that walked on Earth 125 million years ago is the oldest mammal discovered yet. READ MORE Related October 23, 2015 https://geology.utah.gov/wp-content/uploads/ugs-logo-large.png 0 0 Utah Geological Survey https://geology.utah.gov/wp-content/uploads/ugs-logo-large.png Utah Geological Survey2015-10-23 13:58:022016-08-10 16:35:05125-million-year-old cretaceous ‘furball’ is oldest known mammal