Weaver and his colleagues have studied the fossilized skulls and skeletons of these animals, dug up in Montana, and they've given them a name: Filikomys primaevus (friendly or neighborly mouse).
韦弗和他的同事们研究了蒙大拿州挖掘出的这些动物的头骨和骨骼化石,并给它们起了一个名字: Filikomys primaevus(友好或睦邻老鼠)。