I think part of the problem lies in the fact that the science of origins [beit cosmology or "evolution"] can only be part science, at best. That is, the scientific method relies on observation, and there is no way to observe the past, without speculating to some degree [or to a high degree as in the above article].
Personally, I think evolutionists have gotten away with unwarranted speculation for far too long. The fossil record either shows a continuous development of life from the presently extant organisms to the extinct ones of the past, or it doesn't.
If it doesn't they should just deal with it.
Simply explaining away the absence of fossil evidence in the form of transitionals or conjuring up stories to fill in the gaps is not science.
Brian.
Hey- I don't know or pretend to. But until I see some evidence of evolution as it is currently explained I will not be an adherent. I happen to think that cross mating was very possible in eatly earth history.