Bill, I note the to and froing and classifying , promoting and demoting of organisms in the evolutionary story, but best I can see from your initial link ,there was an admission that there are two identical organisms , which could perhaps really be the same except one was buried sometime and the other still around and presumed for some reason to be different from the other.      Btw, the other thing I noticed in the article is that because of the level of complexity of these creatures , life is said by some ( evolutionists ) that the origin of living things must be pushed back into the Precambrian . Correct me if I am wrong, but I assume the difficulty there , is that there is little to show for it in Precambrian strata?.