Wow, cool. Those things used to be pretty big too, there's been fossils found all over the world.
Where'd you find it indy?
It came from the Sulphur River in NE Texas, not far from where I live. I actually found the remains of the largest Tylosaurus in North America a few years ago. SMU, over in Dallas, is curating the skeleton. It is supposed to be on the Discovery Channel sometime soon.