Originally aired April 26, 1996
Written by Steve Brown
Directed by Oscar L. Costo
Arturo injures himself and loses the timer on a parallel world where San Francisco is a nature preserve for endangered dinosaurs. While Quinn heads out alone to retrieve the timer, the rest of the Sliders seek refuge in a cave from a hungry Allosaurus, and also have to contend with an obsessed poacher.
Tropes present in the episode:
- Alternate History: In this one, non-avian dinosaurs never went extinct.
- Big Damn Heroes: When the Allosaurus closes in on Wade and the Poacher, Quinn reappears and starts throwing rocks at it.
- Cannot Tell a Lie: The Sliders, due to mandated truth collars. Every time they lie, they get a shock. They're unable to remove them before departing this world, so they to struggle with them for most of the episode.Quinn: I never realized how many lies a person can tell in the course of a day.
- Everything's Better with Dinosaurs: So much so that this was the highest rated episode of the season.
- Fantastic Nature Reserve: San Francisco is the San Francisco National Dinosaur Preserve and Spotted Owl Sanctuary.
- Hologram: The Ranger. She's a real person, just in a facility away from man-eating dinosaurs.
- Impending Doom P.O.V.: The perspective of the Allosaurus is seen just before she eats the poacher.
- In Spite of a Nail: Perhaps the biggest of the series:
- Firstly, although non-avian dinosaurs survived, none of the featured or mentioned species seemingly evolved in the slightest in the last 65 million years and more since their original time periods — Allosaurus, for instance, seems to be exactly the same thing as it was in its real-life heyday 150 million years ago.
- Secondly, despite the dinosaurs' continued presence, humans and by extension all their ancestors evolved in seemingly the same manner as in our world. Discounting the existence of living dinosaurs being a fact of life on this world and San Francisco being a dinosaur reserve, American society also seems to be largely similar to that of Earth Prime. The poacher is even concerned about being profiled on America's Most Wanted after the ranger discovers him in the dinosaur reserve. When Wade asks the ranger whether she has ever seen anything like the truth collar that she's wearing, the ranger replies "Yeah, in a Frederick's of Hollywood catalogue".
- Irony: Lampshaded.Arturo: I could be far more stoical, if I didn't have this damn truth collar on. It's ironic, isn't it? At the time of our greatest danger to be deprived of the comforts of platitude and self-deception.
- No Name Given: The Poacher's true name is never revealed, and neither is the Ranger's.
- Oh, Crap!: When they first hear the Allosaurus roar.Rembrandt: Hey, guys, what the hell is that?
Wade: Whatever it is, it knows we broke its eggs.
- Real Life Writes the Plot: Quinn being absent for half the episode was the result of Jerry O'Connell filming scenes for Jerry Maguire.
- So Proud of You: Arturo recalls his first meeting with Quinn during a technical lecture.Arturo: Suddenly, this... this tall, gangling first-year student gets up and asks an impertinent question. I was annoyed at him. About a week later, it suddenly occurred to me that quite possibly he was right. And then I was exceedingly annoyed at him! You have no idea, Miss Welles, the joy of being a teacher when at last you come across that rare and unique thing — that first-class mind. That boy is well! I'm sure he is! I can feel it in my bones.
- Stock Dinosaurs: The Allosaurus that stalks our heroes.
- Wrong Genre Savvy: Thinking the Sliders are poachers, the Ranger warns them not to try to escape because she can follow them anywhere.Arturo: Madam, I promise you that, as a hologram, you cannot possibly go where we go.