What does the fossil record confirmation of *Liopleurodon*'s existence imply about the Middle Jurassic seas?

Answer

They held a substantial biomass of large prey items

For such a massive apex predator to be supported, the ecosystem must have been rich enough to sustain it, implying the presence of a substantial biomass of large prey items.

What does the fossil record confirmation of *Liopleurodon*'s existence imply about the Middle Jurassic seas?
dietPredatormarinereptileLiopleurodon