"It's really weird, because along with Paralititan and other big sauropods, we also have three carnivores in this system that are the size of T rex, " says Smith.

BBC: Josh Smith/Univ of Pennsylvania

Along with Paralititan, researchers uncovered other fossils that they believe may belong to some of Stromer's lost dinosaur species, as well as fossils from fish, crab, coelacanth, and crocodile-like species.

BBC: Josh Smith/Univ of Pennsylvania

The research team plans to return to the site at the end of this year, continuing work that they hope will give them a better picture of Paralititan's place within the entire ancient ecosystem.

BBC: Josh Smith/Univ of Pennsylvania