The chronotransit remained solidly in place.

"You must've pushed down too hard," McCarthy III yelled. "You busted it!"

"Yeah," from McCarthy II. "Who ever told you that you could run a time machine? You busted it and now we're stranded!"

"Wait a minute. Wait a minute." McCarthy I pushed them back. "I got an idea. You know what happened? The three of us tried to come back to—to the present, like Professor Ruddle says. But only one of us belongs in the present—see what I mean? So with the three of us inside, the machine just can't go anywhere."

"Well, that's easy," said McCarthy III. "I'm the only real—"

"Don't be crazy. I know I'm the real McCarthy; I feel it—"

"Wait," McCarthy I told them. "This isn't gettin' us any place. The air's gettin' bad in here. Let's go back and argue it out." He pushed the lever down again.

So they went back a hundred and ten million years to discuss the matter reasonably. And, when they arrived, what do you think they found? Yep—exactly. That's exactly what they found.