I am sorry but did you just fricking call Pliosaurus funkei a Mosasaur?
Pliosaurs like Liopleurodon and Pliosaurus funkei are short necked plesiosaurs. Yes, Pliosaurus funkei is related to that long necked plesiosaur that it is biting the neck of.
Nigersaurus taqueti would be a fun sauropod to add. It's lawnmower mouth could give it the ability to harvest more fiber and berries. It is a small sauropod like Amargasaurus.
For anyone who thinks the name is a joke: https://en.wikipedia.org/wiki/Nigersaurus