http://skyrim.nexusmods.com/downloads/file.php?id=16411
This mod add-on REQUIRES Skyrim Monster Mod v5 (http://skyrim.nexusmods.com/downloads/file.php?id=9694) and will not work without it.
For those unfamiliar with Skyrim Monster Mod, it adds many lore-friendly creatures such as the Guar, Durzog, Boars and many others - alongside creatures from The Witcher and Stalker and new creations made for the monster mod. This mod add-on removes some of the more lore-unfriendly creatures.
Creatures removed as of this first release are:
Triceratops
Baphomet
Bullvore
Abomination
Lilith
Nekker
Parasite
Draco Griffon
Cyclops
I've also removed the Mammoth Young and Daedroth (Dragon Man) in the current version as although not entirely lore-unfriendly, they stand out too much for my tastes.
I haven't amended spawn locations (as of this release), so some may still appear in unusual locations.
Installation: Install Skyrim Monster Mod first from http://skyrim.nexusmods.com/downloads/file.php?id=9694and replace the SkyMoMod_lists.esp file with http://skyrim.nexusmods.com/downloads/file.php?id=16411.
Disclaimer: I haven't tested this very thoroughly, and there may be errors and/or lore unfriendly creatures that I haven't yet removed. If you find any errors or see any creatures that you believe should be removed, please let me know and I'll have a look when I next update.
All credits go to DogTown1 for the original Skyrim Monster Mod and the creators of the original creatures. This mod add-on has been approved by DogTown1.