IE. fish with half formed limbs
Mudskipper - Wikipedia
added by edit:
Look at it this way...
Let's have a lineation of species from A to C, with B as the intermediate transitional that you're seeking.
A --> B --> C
In hindsite, when we have all three species, it is easy to see that species B has some of the features of A that are different but not quite as different as C's so we can see that it is "in-between" them and can call it a transitional.
But if we're talking about modern species today, then we would be missing that C component:
A --> B --> ?
Without knowing what's comming next, and only having one end of the chain, we can't really show how B is a transitional.
Does that make sense?
That doesn't mean that there aren't any transitionals today, its just that we can't really show that they are without all the pieces indicating it as such (and we can't predict the future).
Edited by Catholic Scientist, : No reason given.