[@Sola] You might have covered this before, but I'll ask for [sub][s]because I can't remember your answer[/s][/sub] everyone else's sake: are the portals only opening to one specific time period (Late Cretaceous, Early Jurassic, etc.), or are they all opening up to different times and places (ie- having a portal opening up to the Triassic and another to the Cretaceous in the span of a mile or two)? And are they tied to the place (ie- a portal in New York City opens up only to where NYC was 75 million years ago)?