@Elmud,
No - species are only distinguishable through benefit of hindsight.
In reality, there was no first human - but a population of things that were once something so close to being human that the distinction would have been already largely irrelevent, and members of that population went on to form a poulation of humans.
Many (if not most, if not all) humans alive today would be more genetically distinct from that population than that population were from their parents.