T. Rex Was Likely an Invasive Species

[sauroid]

Tyrannosaurus rex could possibly be the direct descendant of Tarbosaurus bataar, if they werent the same species at all...
http://www.livescience.com/53877-t-rex-was-invasive-species.html

[MLMjp]

Tyrannosaurus could possibly be the direct descendants of Tarbosaurus, if they werent the same species at all...
http://www.livescience.com/53877-t-rex-was-invasive-species.html

If this is true, then Tyrannosaurus rex was a mighty conqueror!!

I do not know why, but this news makes me feel strange about my favorite dinosaur now. Now results that It could be a nationaliced american instead of a native one. How many little secrets is still keeping.

[CityRaptor]

Overwhelming the local species by sheer size and muscle.

Given what we know about the relationship between the three big Tyrants, it makes sense that one would be an invasive species.

[stargatedalek]

Honestly it doesn't make sense. Why would it's ancestors be native if it wasn't? If anything this would be presenting Tarbosaurus as the travelling species, but they are probably just an example of convergence between closely related species.

[Gwangi]

Honestly it doesn't make sense. Why would it's ancestors be native if it wasn't? If anything this would be presenting Tarbosaurus as the travelling species, but they are probably just an example of convergence between closely related species.

The hypothesis suggests that the closest relatives to Tyrannosaurus are Tarbosaurus and Zhuchengtyrannus. North America has its own tyrannosaurids but they're not as similar to Tyrannosaurus as the Asia tyrannosaurids.

[stargatedalek]

Personally I think we're witnessing a migration somewhere closer to Daspletosaurus and then the resulting convergence, but I suppose looking at the diagram again I can now understand where the idea is coming from.

[Derek.McManus]

Interesting idea, I like this concept dinosaurs spreading out and dominating the environment!