I too would like to have a T. Rex steak.
...
Or maybe a bronto-burger, dream of man since the ancient Hanna-Barbarians first drew Fred and Wilma.

I'm betting that our tampering with the blue portal at the present time will be what actually caused the Cretaceous mass extinction

I was going to yell "paradox" but how much of an effect would extracting resources from the past cause?
Well, it doesnt matter at the end, this just keeps getting more interesting.