They were 85 million years back. In another 20 million you'd get the asteriod strike that wiped out 99% of the existing species reptile, mamal, or otherwise. So, not really much chance of screwing with evolution in the long rn I suppose.
id like to think that if the new colony lasted 20 million years using knowledge and technology already significantly better than ours that they could stop an asteroid.
Must admit i very much enjoyed the show, was differant , suppose i liked the idea of dinosaurs, i tend to think shows like that shuld get a better run then one season, give it a full two season to run.