I think Dax's 2nd or 3rd symbiont actually dated McCoy, so she must be around then somewhere.
There is a bit of a continuity hole there though, because in 'The Host' TNG Dr. Crusher seemed to be unfamiliar with Trills. On the other hand maybe she just wasn't a very good doctor!
There is a bit of a continuity hole there though, because in 'The Host' TNG Dr. Crusher seemed to be unfamiliar with Trills. On the other hand maybe she just wasn't a very good doctor!