I'll take the Coelacanth fish. It is not the same species as the one in the past, not even in the same family. It is a different family of Coelacanth.
"It is not the same species as the one in the past, not even in the same family. It is a different family of Coelacanth."
True, but largely irrelevant. And actually they are the same family but different genuses:
http://www.marinebio.com/species.asp?id=54
The point being that NONE of these have been in the fossil record for 70-80 million years. If we found a living T-Rex would you complain because it was slightly different and needed to be in a different genus?