It's neat, but I hate how quickly anthropology is to claim something is a different specie.
The proprietary factor of speciation is reproductive segregation. The inability to produce viable offspring with the original specie.
Two million years is a long time for any genetic material to survive, so seeking to differentiate these things by observable differences alone is a broken science.
In the end, we just don't know if H. rodolfensis was capable of producing viable offspring with H. erectus.
This post was edited by piddywiffle on Aug 9 2012 09:45am