Palaeontology: 75 million-year-old burrow contains fossilised rodents snuggled-up together
Cuddling may date back further than we thought, as scientists have unearthed the remains of a 75.5 million-year-old burrow containing the fossils of snuggling rodents. US palaeontologists made the find — the oldest evidence of social behaviour among mammals — in a noted dinosaur nesting site called Egg Mountain, in Montana. The small mammals — … Read more