Every serious biologist will tell you that; "there are major gaps in human evolution, so we rather build our science on SPECULATION AND FORESIGHT! " In reality they find fragments with scapula, clavicula, femur and part of cranium (if they have a luck of course). So they build their theory on physiognomical and anatomical similarities with closest species (comparative method). And there is nothing wrong with Evolution at all (i do not deny it), I only want to say that there exist several human remains (of Homo Sapiens) which were discovered among the black coal, burried bellow 80 m or so...All these artifacts were: destroyed or hidden from the public, because of several reasons.
http://www.mcremo.com/
That's why you still have a Creationist program in USA as part of the School curriculum...