Why are the stratums not full of useless growths on failed species' evolution, not yet beneficial, if the....?

failure rate in survival of the fittest should be substantially higher than the success rate? Does anyone out their who believes that evolution prevails over intelligent design have an answer? Why are all fossils lacking evolutionary failures of nonproductive parts? This is a serious problem which Darwin mentions in Origin of Species. If we are all transitionals...the sheet number of grotesque failures should be evident everywhere, far outnumbering the consistency which is evident to not contain them, both in living species and fossils. In other words, why do these beneficial mutations in DNA not exists on a scale which would fit the timeframe of evolutionary theory?