Monsters gone extinct

We know the Duskers (Wolver family) are gone. The normal Wolvers replaced them in Tier 2 and the shock Wolvers have taken the Duskers' skin (ANIMAL CRUELTY).
Leading to this: Has anyone seen the Brute Jelly Cube recently (no more than two weeks ago)? I play on low quality so what ends up happening is that the non-mini jelly cubes are a dark purple-pink cubic blobs for me. I suspect they're stronger versions of the Jelly Cube so they might have replaced the Brute Jelly Cube.
When I figure out how to upload animated gifs onto the Wiki every monster will have a gif of their own D<

I think it's the same with Ash Wolvers that are now Ash Tails. I also haven't seen Rocky Jellys or Ironwoods. I'm sort of hoping they're used somewhere else. It's such a waste of great designs.
Brute Jellies are indeed a glowy-shiny-thingy pink jelly now.
However, blue jelly cubes still exist - Setting a freeze jelly on fire melts it, and it becomes a normal blue jelly.
@Levonis - I haven't ever seen Ironwoods anymore, however Rock Jellies now rarely and randomly spawn if you destroy stone blocks. (...Or any destructible block, unless this was fixed already? I got a Rock Jelly to spawn from the crates in Firestorm Citadel once) Kinda like a mimic. It's pretty nifty.
i have also seen a rock jelly spawn recently. In the graveyard after breaking the three hit stone blocks one popped up. Havent seen ironwoods for a while though sorry.
I think they were replaced by what I uploaded as brute jelly cube now (hm, I noticed the green graphic glitch only after I uloaded it, I'll hunting for a better version). They have a distinctive core and are more dangerous than normal jelly cubes.

No need to stress about this. Tonight I'll look up info to check the names for you guys and let you know if it's just a tier version instead.

There was also this thread: http://forums.spiralknights.com/en/node/1536 but some of that's not too clear & some bits are missing.
So for my list, I've done some grouping like the Jelly & Lichen Family that might not be official, but it makes sense to have the square vs round ones split up. Same with putting the Kleptolisk with the rest of the lizardy things. However, if you want to go with the groupings in Nick's post, feel free to do so.
Not really in alphabetical order or anything and done in wiki formatting for bullets in case that helps, but I must paste & run, so someone else can temp wiki page it for reference if they want. Watch out in case I made typos too. Hopefully I haven't messed up in some way that makes this list different from Nick's (did a quick check, so hopefully it's all good).
*Beast
**Chromalisk
***Chromalisk
***Electrolisk
***Salamander
***Tundralisk
***Virulisk
***Chromalisk Whelp
***Kelptolisk
**Wolver
***Ash Tail
***Frostifur
***Rabid Wolver
***Voltail
***Wolver
***Alpha Ash Tail
***Alpha Frostifur
***Alpha Voltail
***Alpha Wolver
***Rabid Alpha Wolver
*Construct
**Gun Puppy
***Gun Puppy
***Red Rover
***Sick Puppy
***Slush Puppy
***Spark Puppy
***Love Puppy
**Lumber
***Electreant
***Ironwood Sentinel
***Lumber
***Redward
***Silversap
***Vilewood
**Mecha Knight
***Cryo Knight
***Firo Knight
***Mecha Knight
***Poison Knight
***Volt Knight
**Retrode
***Hotrode
***Isotrode
***Retrode
***Sleetrode
***Voltrode
**Scuttlebot
***Brumabot
***Cinderbot
***Hazbot
***Scuttlebot
***Surgebot
**Tortodrone
***Tortodrone
*Fiend
**Devilite
***Blarful
***Blarful Overtimer
***Devil-IT
***Devil-IT Overtimer
***Devilite
***Devilite Overtimer
***Firebrander
***Firebrander Overtimer
***Layoafer
***Layoafer Overtimer
***Pit Boss
***Yesman
**Greaver
***Greaver
***Ruby Greaver
***Pearl Greaver
***Beryl Greaver
***Jade Greaver
**Silkwing
***Silkwing
**Trojan
***Trojan
*Gremlin
**Darkfang Demo
**Darkfang Mender
**Darkfang Scorcher
**Darkfang Thwacker
**Ironclaw Demo
**Ironclaw Mender
**Ironclaw Scorcher
**Ironclaw Thwacker
**Tenderfoot Demo
**Tenderfoot Mender
**Tenderfoot Scorcher
**Tenderfoot Thwacker
*Slime
**Jelly
***Blast Cube
***Impostocube
***Soul Jelly
***Ice Cube
***Jelly Cube
***Rock Jelly
***Jelly Green Mini
***Royal Mini
**Lichen
***Giant Lichen Colony
***Large Lichen Colony
***Lichen Colony
***Oiler
***Quicksilver
***Toxigel
***Sloom
***Sloombargo
***Toxilargo
*Undead
**Phantom
***Phantom
**Spookat
***Mewkat
***Bloogato
***Hurkat
***Pepper Kat
***Spookat
***Statikat
**Zombie
***Droul
***Dust Zombie
***Frankenzom
***Frozen Shambler
***Slag Walker
**Slag Guard
Bosses:
*Royal Jelly (Jelly!)
*Lord Vanaduke
Monsters that as far as I know aren't in the game any more, but have been seen in the past (possibly during other previews):
*Gold Puppy
*Gold Trojan
Monsters that have been mentioned by devs, but I don't know that they've ever been seen in game:
*Black Kat
*Jelly Green Giant
*King Tinkinzar
Edit: Forgot the cute little royal mini!

A minor note: in some testing earlier, the tortodrone did not appear to be either weak to elemental damage (like a construct) or strong against it (like a beast).
Instead, the damage numbers appeared in a normal color and size when I shot it with a Voltech Alchemer mk III. I'm not sure what to classify it as, then.
Boswick mentioned something about having Curse resistance when fighting the Black Kat.

Jelly Green Giant was spawned in a PvP arena earlier so yes, it does exist.
I think the BROOT JELLEH have gone under a makeover to their new fashionable pink state. On my PC (still parted out on the floor for spring cleaning...sigh) the big pinks are quite shiny.