Elasmosaurus - new discovery!
The Elasmosaur is a type of Pleisiosaur and a new fossil was just discovered in Australia.
Theory is the dinosaur died from a big underwater apex predator and the big apex predator bit its tail clean off so the rest of the body sank immediately down to the bottom and got covered up until it got turned into a fossil. And then people dug up the fossil!
So now we have a better idea of Elasmosaurus!