After almost a century of standing watch on the border, Fort Clark was deactivated on Feb. 9, 1946 and turned into, of all things, a dude ranch. Hellbent-for-leather horse soldiers must have turned ...

Now, more than a decade later, new analysis of the fossils has found that they belong to a new 73-million-year-old species, according to a study published Jan. 28 in the peer-reviewed journal ...