They have to put Liopleurodon in JP4 !

Any giant marine predator would be something cool to have. Well.. only time will tell...

It would be cool to have in JW.

I love Liopleurodon. I know some estimate it at only 20-30 feet and 5 tons or so, but I agree with the 80-85 ft long, 150 ton estimates.

I see it as about 50-70 feet and 80 tons tops.

As with most things in paleontology, it's a matter of opinions and theories.

I think, And this is only franchising reason talking here, That they might put in Megladon or Tylosaurus, Megladon because its one of the most well known sea creature, and Tylosaurus because they already had one appear in the Franchise (JPTG, The Underwater paddock) 

acctually liopleurodon (I think) weight about 15-20 ton, it's so huge it makes a sensation in WWD Ep.4 " the cruel sea", where a liopleurodon get stranded at the coast in U.K

At 80+ ft(at least in WWD), it's gonna be well over 20 tons. 50 tons at the very least, but 80-150 tons is more likely at that size. These were possibly massive animals. The size of blue whales today.