Argentinosaurus or Puertasaurus?

I think they used Apatosaurus because it's a graceful, yet still large sauropod. As cool as Argentinosaurus and Puertasaurus are, they don't have the majesty or grace that Apatosaurus has. It's too bulky.

If done correctly, Argentinosaurus would be a spectacle because of sheer size. Imagine the Brachiosaurus scene in the first movie but using an animal that's even BIGGER. That would be something to see.

I do hope they expand their horizons in future films with actual dinosaur species instead of genetic hybrids (like, cross-species wise). It's more fun to see animals in the JP franchise; leave the monsters to the monster movies.