Another view of human ancestors, thinking the classifications are sloppy:-http://phys.org/news/2015-08-genus-homo.html- "To ultimately understand what is Homo and what is not, Schwartz contends, anthropologists must approach their science in a more systematic fashion in order to truly understand the evolutionary past that led to the human of today.-"'If we want to be objective, we shall almost certainly have to scrap the iconic list of (genus and species) names in which hominid fossil specimens have historically been trapped and start from the beginning," he says."