Large Mosasaur Vert, Assuming Tylosaurus, Anyone Know More?

[vellis]

It is from the North Sulphur River in Texas, which is Upper Cretaceous. This is the biggest one that I have seen, granted I have not seen a ton of them. Does anyone know what part of the creature that this may have came from? Or any other info?

Thanks,

Van

[sward]

Nice finds! Isnt' the North Sulphur River wonderful?

I'm wondering if it might not be a Plesiosaur vert?

I'm sure some of the experts will be along to give their opinion. Lets wait to see what some others say.

[Boneman007]

There have been a number of other species of mosasaurids that have been described from the North Sulphur River. Halosaurus is one. It could very well be Tylosaur though. I have seen a complete Tylosaur come out of the river that had vertebrae much larger than that. It really depends on the position within the backbone that the vertebra comes from.

[jwcounts]

Wow, that's a big one. Looks like mosasaur to me bc of the concave/convex ends. Plesiosaurs have 2 concave sides. great find.