By tracing DNA from people all over the planet scientist .... and National Geographic have been able to establish the migration patterns of Homo Erectus from the moment they left Africa. Long was thought Neanderthalers and Homo erectus where two different species, who just happen to share habitat in Northern Europe. Recently it has been discovered that they did interbred. These skulls were photographed at ... in Paris and the lab of Professor Emeritus. .... from Columia University in New York.