From ILYY:
“The Liopleurodon is a beefy full-size organic with a lot of power but a surprising amount of relaxed smoothness – a truly prehistoric experience.”
The Liopleurodon has stayed pretty consistent over the years, but let’s break down each run:
Prototype #1

Release: June 2009
Diameter: 54.85mm
Width: 41.50mm
Weight: 68.00g
Bearing: L
Response: 15x22x2 pads
The first prototype of the Liopleurodon saw 30 units in a purple/titanium colorway with a CandyBlast finish.
Run #1

Release: November 2009
Diameter: 54.85mm
Width: 41.50mm
Weight: 68.00g
Bearing: L
Response: 15x22x2 pads
The first production run of the Liopleurodon had 100 units in a purple/titanium colorway with a CandyBlast finish.
Special #1

Release: November 2009
Diameter: 54.85mm
Width: 41.50mm
Weight: 68.00g
Bearing: L
Response: 15x22x2 pads
The Liopleurodon Special #1 run had 30 units in an orange/blue colorway with a CandyBlast finish.
Special #2

Release: November 2009
Diameter: 54.85mm
Width: 41.50mm
Weight: 66.7g
Bearing: L
Response: 15x22x2 pads
The Special #2 run of the Liopleurodon had 5 units in a pearl colorway with a Pearl finish.
Run #2

Release: October 2010
Diameter: 54.85mm
Width: 41.50mm
Weight: 67g
Bearing: L
Response: 15x22x2 pads
Run #2 of the Liopleurodon had 67 units in an orange colorway with a CandyBlast finish.
Special #3

Release: November 2010
Diameter: 54.85mm
Width: 41.50mm
Weight: 66.70g
Bearing: L
Response: 15x22x2 pads
The Special #3 run of the Liopleurodon had 20 units in a blue colorway with a Candodize finish.
Special #4

Release: November 2010
Diameter: 54.85mm
Width: 41.50mm
Weight: 66.70g
Bearing: L
Response: 15x22x2 pads
The Special #4 run of the Liopleurodon had ??? units in a slime green colorway with a Canflon finish.
Run #3

Release: March 2010
Diameter: 54.85mm
Width: 41.50mm
Weight: 67g
Bearing: L
Response: 15x22x2 pads
Run #3 of the Liopleurodon had 58 units in a purple/titanium colorway with a CandyBlast finish.
Special #5

Release: April 2012
Diameter: 54.85mm
Width: 41.50mm
Weight: 66.70g
Bearing: L
Response: 15x22x2 pads
The Special #5 run of the Liopleurodon had 11 units in a purple/titanium colorway with a Candodize finish.
Special #6

Release: May 2012
Diameter: 54.85mm
Width: 41.50mm
Weight: 66.70g
Bearing: L
Response: 15x22x2 pads
The Special #6 run of the Liopleurodon had 25 units in a MonkeyFinger Design splash colorway with a Soda Blast finish.
Run #4

Release: November 2022
Diameter: 55mm
Width: 41.3mm
Weight: 65.4g
Bearing: C
Response: 14x19x1.2 pads
Run #4 of the Liopleurodon had 62 units in a purple/titanium colorway with a Soda Blast finish.