Woolly mammoths and people might have crossed paths in New England This portion of a woolly mammoth rib, part of the Hood Art Museum collection, contained enough organic material to be radiocarbon dated – about 12,700 years ago. Image by Nathaniel Kitchel and Jeremy DeSilva An illustration of a wooly mammoth. Wikipedia Related stories In fossil-deprived Northern New England, where geology melted dinosaur remains and glaciers ground up everything else, woolly mammoths are special. Mammoths and their mastodon cousins are the only extinct megafauna that were definitely here at some point. Solid evidence exists in the form of teeth from a couple of places in New Hampshire and teeth or bones in a few other New England spots.