I'm sure the majority of people on here can recall the enemies of Oblivion and likely Morrowind, but there were many in Daggerfall that were not carried over into either of those games. Seeing as High Rock borders Skyrim it shouldn't be too far fetched to see a few, even if that border is technically across the province from where Daggerfall took place.

Those on the list are creatures that appeared only pre-Morrowind, there are also no creatures that are simply different ranks of base creatures, or bosses. I decided to forgo some Atronachs and Daedra as they seem to be more or less the same things as in later games with different names.

I haven't played Redguard, Shadowkey, or Battlespire, but I figured while I was looking at the list I may as well throw them in, along with Arena.

If you want a little info I simply used the http://www.uesp.net/wiki/Lore:Bestiary_A.

http://www.gamesas.com/index.php?/topic/1151537-creatures-monsters-beasts/