New fossil evidence suggests the primate Teilhardina magnoliana originated in Asia and dispersed across Bergingia to occupy coastal regions in North America (red line). Later, a fall in sea level allowed the tiny primate to disperse across the North Atlantic land bridge connecting Greenland with Europe (orange). Then, increased precipitation in the Rocky Mountain interior made Wisconsin habitable for the primates (yellow). Credit: Mark A. Klingler/CMNH