ESO Trophies / Collectible Achievement Guide (Spoiler Alert)

This is a comprehensive list of ESO trophies for your collectible achievements, including the enemy it drops from, what faction, zone and dungeon or landmark they are located in or around.
                                                                                 
Important Notes about trophies/collectibles:
Veteran rank level characters can only obtain collectibles from enemies level 45 and up. If your character can get experience and normal loot from the enemies, then the trophy can drop from them.
Trophies can drop from the specified enemy type at any location/zone. It is not location specific. For the most part, locations listed below are suggested locations to farm the correct enemy.
The drop rate of collectibles is completely random. Some trophies may take you several hundred or thousands of enemies to kill before it drops.

If you find any good farming spots not listed, comment in the thread and I will try and update it.

Please post the following information:
Name of the collectible
Name of the enemy that dropped it
Zone you found it in
Nearby landmark or area of the zone
How many of the specified enemy types are in the area (approx. numbers are ok too)

* These are items I've personally confirmed on this list

Atronach Element Collector
Spoiler: hide
Smoldering Emberheart - Fire Atronach
AD - Willowgrove (Reaper's March),
DC -
EP -
Other - Spellscar (Craglorn), Lost Village (Coldharbor), Lightless Oubliette (Coldharbor)

Fleshy Simbiont - Flesh atronachs
AD - Abamath (Malabal Tor)
DC -
EP -
Other - Lost Village (Coldharbor/ Khajiit Village & Orc Village)

Everfrost - Frost Atronach
AD - Willowgrove (Reaper's March)
DC -
EP -
Other - *Spellscar (Craglorn)[8-10], Lightless Oubliette (Coldharbor)

Crackling Lodestone - Storm Atronach
AD - Near Willowgrove (Reaper's March)
DC - Rubble Butte (Bangkorai)
EP -
Other - *Spellscar (Craglorn)

Chitin Accumulator
Spoiler: hide
Petrified Spider Egg - Spider
AD -
DC - Outside Rubble Butte (Bangkorai)
EP - Hunters Camp (Bleakrock Isle)
Other -

Calcified Cuttle - Transmuted Warrior, Kwama
AD - Burroot Kwama Mine (Grahtwood)
DC -
EP - *Vet. Fungal Grotto (Deshaan), SW of Senie (Stonefalls)
Other -

Razor-Edged Mandible - Shalk
AD -
DC -
EP -*Senie (Stonefalls), Sulfer Pools (Stonefalls)
Other -

Luminous Blood Sac - Hoarvor
AD -
DC -
EP - Xal Ithix (Shadowfen)
Other -

Polished Shell Shard - Mudcrab
AD - Near Brackenleaf on bay (Grahtwood)
DC - *Halcyon Lake (Bangkorai)
EP - Beach north of Harborage (Stonefalls), North of Ebonheart (Stonefalls)
Other -

Prized Barb - Scorpion
AD -
DC -
EP -
Other - West of Dragonstar (Upper Craglorn)

Multifaceted Eye - Nix-Hound
AD -
DC -
EP - *Heimlyn Keep (Stonefalls), Greymist Falls (Stonefalls)
Other -

Gossamer Winglet - Wasp
AD -
DC - *Near Onsi's Breath (Bangkorai)
EP -
Other -

Dwarven Secrets Gatherer
Spoiler: hide
Perfectly Balanced Gyro - Dwarven Sphere
AD -
DC - *Razak's Wheel (Bangkorai)
EP - Avanchnzel (Rift)
Other -

Whirring Dynamo - Dwarven Spider
AD -
DC - Razak's Wheel (Bangkorai), Klathzgar (Bangkorai), Aldunz (Alik'r Desert)
EP - Avanchnzel (Rift), Bthanual (Deshaan)
Other -

Monstrous Component Collector
Spoiler: hide
Werewolf's Cameo - Werewolf
AD -
DC - *North of Aldcroft (Glenumbra)[21]
EP -
Other - Lunar Fang Docks (Cyrodiil)

Nose Shackle - Ogrim
AD -
DC -
EP -Eidolon's Hollow (Deshaan)
Other - Coldharbor (Outside Tower of Lies)

Troll Skull - Troll
AD - Falinesti Winter Site (Grahtwood)
DC -
EP - Vernim Woods (The Rift), Trollslayer Gully (The Rift), Thulvald's Logging Camp (Eastmarch)
Other - Newt Cave (Cyrodiil)

Ogre Toe Ring - Ogre
AD - Carac Dena ( Greenshade )
DC - Shinji's Scarp (Stormhaven)
EP -
Other - Serpent Hollow Cave (Cyrodiil)

Stony Heart - Gargoyle
AD -
DC - *Lost City of Na-Totambu (Alik'r), Qharroa Ruins (Bangkorai)
EP - Shrine of the Black Maw (Shadowfen)
Other -

Second Skin - Lamia
AD -
DC -
EP -
Other - *Lake south of The Moonless Walk (Coldharbor)

Flawless Tail Feather - Harpy
AD -
DC - *Shrieking Scar (Glenumbra), Near Yldzuun Dungeon (Alik'r Desert), Silverhoof Vale (Rivenspire)
EP -
Other -

Nature Collector
Spoiler: hide
Primal Sproutling - Spriggan
AD -
DC - *Near Viridian Woods Wayshrine (Bangkorai), Deleyn's Mill (Glenumbra)
EP - Thulvald's Logging Camp (Eastmarch)
Other - The Moonless Walk (Coldharbor)

Lashing Tentacle - Strangler
AD - Root Sunder Ruins (Grahtwood)
DC -
EP - Xal Ithix (Shadowfen)
Other - *Lake south of The Moonless Walk (Coldharbor)

Brass Anklets - Nereid
AD - Nereid Temple (Greenshade)
DC - Near Shrine to Azura (Stormhaven)
EP -
Other - *Shada's Tear Lake & Sandy Path Lake [11] (Craglorn)

Imp's Effigy - Imp
AD -
DC - Near Deleyn's Mill (Glenumbra)
EP -
Other -

Icebound Vertebra - Ice Wraiths
AD -
DC -
EP - *Lion's Den [19] (The Rift)
Other - Caves around Bruma (Cyrodiil), Tower of Lies (Coldharbor)

Knotted Heart - Lurcher
AD -
DC - Near *Jackdaw Cove (Bangkorai), Chill House (Glenumbra)
EP -
Other -

Glowing Remnant - Wisp
AD -
DC -
EP - *SW Corner of Crow's Wood (Stonefalls)
Other -

Oblivion Shard Gatherer
Spoiler: hide
Banekin Horn - Banekin
AD -
DC - *Around Arlamahera's Sanctum (Bangkorai), Damar Farmstead (Bangkorai)
EP -
Other - The Cave of Trophies (Coldharbour)

Daedric Dewclaw - Clannfear
AD -
DC - *Hollow Waste (Alik'r Desert)
EP -
Other - The Cave of Trophies (Coldharbour)

Burning Daedroth Eye - Daedroth
AD -
DC - *Hollow Waste (Alik'r Desert), Damar Farmstead (Bangkorai)
EP -
Other - Black Forge (Coldharbor)

Blighted Iron Collar - Scamp
AD -
DC - Vanne Farm (Stormhaven)
EP - *Ash Mountain (Stonefalls), Brothers of Strife (Stonefalls)
Other - The Everfull Flagon (Craglorn)

Spider's Crown - Spider Daedra
AD -
DC -
EP -
Other - Near *The Everfull Flagon (Coldharbor)

Tamriel Beast Collector
Spoiler: hide
Shimmering Alit Bezoar - Alit
AD - Kenarthi's Roost
DC -
EP - North of Shivering Shrine World Boss (Stonefalls), *Hissmir Wayshrine (Shadowfen)
Other -

Magnificent Bat Pelt - Giant Bat
AD - Shademist Moors (Greenshade)
DC -
EP - *Crow's Wood (Stonefalls)
Other -

Gnarled Bear Claw - Bear
AD -
DC - *South of Shinji's Scarp (Stormhaven)
EP - Along stream leading to Snapleg Cave (The Rift), Hunters Camp (Bleakrock Isle)
Other -

Wolf's Tooth Necklace - Wolf
AD - Glister Vale (Auridon)
DC -
EP - *Crow's Wood (Stonefalls)
Other -

Cat's Claw - Senche Tiger or Sabre Cats
AD - Vet. City of Ash [13] (Greenshade), Jode's Light (Reapers March)
DC -
EP - Hatching Pools (Shadowfen), Ragged Hills (The Rift)
Other -

Inert Egg - Giant Snake
AD - Thormar ruins (Reaper's March)
DC - Ogre's Bluff (Alik'r Desert)
EP - Around Vale of the Ghost snake (Deshaan)
Other -

Malformed Kagouti Tusk - Kagouti
AD -
DC -
EP - *Near the Hatching Pools Wayshrine (Shadowfen)
Other -

Huge Mammoth's Tooth - Mammoths
AD - Vulkwasten (Malabor Tor)
DC -
EP - Ragged Hills Dolmen (The Rift)
Other -

Buzzing Spine - Wamasu
AD - SW of Haven (Grahtwood)
DC -
EP - *South of Hatching Pools and North of Deep Graves (Shadowfen)
Other -

Bile Gilt - Bull Netch
AD -
DC -
EP - *Bal Foyen
Other -

Cruel Collar - Jackals
AD -
DC - Ogre's Bluff (Alik'r Desert), Artisan's Oasis (Alik'r Desert)
EP -
Other - Just east of Belkarth (Craglorn)

Scaly Durzog Hide - Durzogs
AD - Toothmaul Gully (Auridon)
DC - Divad's Chagrid Mine (Alik'r Desert)
EP - Mud Tree Village in Cave (Shadowfen)
Other - *Outside Shada's Tear (Craglorn)

Undead Hoarder
Spoiler: hide
Hand of Glory - Zombie
AD -
DC - Tava's Blessing (Alik'r Desert)
EP -
Other - *Coldharbour (Vile Laboratory)

Chattering Skull - Skeletons
AD -
DC -
EP - Hall of the Dead (Eastmarch), *Forgotten Crypts (Deeshan)
Other - Shada's Tear (Craglorn)

Wraith Shackle - Wraith
AD -
DC - Westtry (Glenumbra)
EP - *Forgotten Crypts (Deeshan)
Other - Vahtacen (Cyrodiil)

Tomb Urn - Sand Human
AD -
DC - Crypt of the Exiles (Bangkorai), Lost City of Na-Totambu (Alik'r Desert)
EP - *Gandranen Ruins (Shadowfen)
Other - Hel'Ra Citadel (Craglorn), Around Seeker's Archive (Craglorn)

Twitching Draugr Hand - Draugr
AD -
DC -
EP - Bonestrewn Crest (Eastmarch), Stormcrag Crypt (Eastmarch)
Other - *Vault of Haman Forgefire (Coldharbor)

Ectoplasmic Discharge - Ghost, Spectral Archer, Wraith
AD - Tanzelwil (Auridon)
DC - Enduum (Glenumbra), Aphren's Hold (Stormhaven), Westtry (Glenumbra)
EP - Forgotten Crypts (Deeshan), *Heimlyn Keep (Stonefalls)
Other -