"Why then is not every geological formation and every stratum full of such intermediate links? Geology assuredly does not reveal any such finely graduated organic chain; and this, perhaps, is the most obvious and gravest objection which can be urged against my theory. The explanation lies, as I believe, in the extreme imperfection of the geological record." Charles Darwin (1859), The Origin of Species, p. 280. Funny, that's what Darwin said about transitional species. But NONE!
It's not like one 'missing link' is missing - it's ALL of 'em. And yeah, enough time has gone by that we should have found some ...