Tough choice for me but it would be one of these:

- Diplodocus

- Rapetosaurus

- Diamantinasaurus

- Argentinosaurus

- Sauroposeidon

- Alamosaurus

Toba titanosaurus

@Concaventor Wrangler you mean the starter guy from Fossil Fighters: champions?

Looked it up turns out it is a named individual like stan is

Oh that is cool!