Last week a new species of mammal from around 125 million years ago was described in the journal Nature called Spinolestes xenarthrosus. It had a pile of unusual and perhaps advanced features that gives more evidence that mammals in the Mesozoic were diverse in their morphology and ecological niches. The spectacular preservation of the skin and hair meant that the soft ears and the spine-like hair structures were preserved!
Al Evans commented on the new finding in the online news site The Verge.