Well yeah--that's the problem.

I've seen all kinds of things I can't identify. Most of them are perfectly identifiable, I just wasn't able to do so at the time (dodging dozers is NOT the time to break out a book on Camelops femurs!). By the definition I was discussing, that's a cryptid--despite the fact that I only couldn't identify it because of time constraints.
On one job one of our contractors found a fossil footprint. Really weird--you could tell it was something, but not what. Took us two weeks to figure out it was a footprint, in fact--and another three months before we could find someone who could identify it. By the definition I was discussing, that made it a cryptid while it was being analyzed. Which is nonsense; it was just unidentified. Really cool, though--turned out it was a marine mammal that hadn't lost its land-legs yet (as opposed to, say, a walrus, which can come onto land but obviously isnt' good at it). The reason it was hard to ID was that the creature had turned while making the print, meaning that the whole thing was distorted. The guy who identified it loved it, as it demonstrated some interesting things about its locomotion.