By Samanda Dorger “Jurassic World: Dominion” opens June 10 and will introduce several dinosaurs we haven’t seen yet in the fictional series, a few favorites will return, too. Here’s a guide. You’re staring down the mouth of a 6-ton dinosaur. Should you play dead? Can you outrun it? Can’t you just feed it a large fern frond? You’d better know, because “Jurassic World Dominion” opens June 10, and dinosaurs are really going to be on the rampage this time. The sixth film of the “Jurassic Park” franchise and third in the “Jurassic World” trilogy, “Dominion” may also be the grand finale—or the begin…