Extension

1.I infer that there is a dinosaur at their minds and they are targeting him.
Out of the mist, one hundred yards away, came Tyrannosaurus Rex
2.
A

It came on great oiled, resilient, striding legs. It towered thirty feet above half of the trees, a great evil god, folding its delicate watchmaker's claws close to its oily reptilian chest. Each lower leg was a piston, a thousand pounds of white bone, sunk in thick ropes of muscle, sheathed over in a gleam of pebbled skin like the mail of a terrible warrior. Each thigh was a ton of meat, ivory, and steel mesh. And from the great breathing cage of the upper body those two delicate arms dangled out front, arms with hands which might pick up and examine men like toys, while the snake neck coiled. And the head itself, a ton of sculptured stone, lifted easily upon the sky. Its mouth gaped, exposing a fence of teeth like daggers. Its eyes rolled, ostrich eggs, empty of all expression save hunger. It closed its mouth in a death grin. It ran, its pelvic bones crushing aside trees and bushes, its taloned feet clawing damp earth, leaving prints six inches deep wherever it settled its weight.

Sunk in thick ropes of muscle

Exposing a fence of teeth like daggers

Each thigh was a ton of meat, ivory and steel mesh.

3.

If you dopisobey instructions there is a stiff penalty of another ten thousand dollars plus a possible government action on your return .

This foreshadow that some thing bad will happen and it does when Travis and eckels nearly killed them and they would have had to pay ten thousand dollars to the government plus a government action.

 "Does this safari guarantee I come back alive?"We guarantee nothing," said the official, "except the dinosaurs." 

This foreshadows that the might not come back alive.

Makes you think, If the election had gone badly yesterday, I might be here now running away from the result.

This foreshadows that when they get to deutcher in the end they would have been elected.

Stay on the path don't get out of it, I repeat don't go off it

It foreshadows that eckels will go out of the track

Can these guns get a dinosaur cold?" Eckels felt his mouth saying. This foreshadows that when they shoot the dinosaurs will not die when they are getting shot.

We might need it. I'm warning you, Eckels, I might kill you yet. I've got my gun ready."

It foreshadows that eckels is going to be killed