In Dino Veritas (S02E07)

The slide bring the sliders to a primeval forest and dumps them into a giant egg-filled nest, irritating the mother allosaurus nearby. As they flee from the rampaging dinosaur to a cave, one of them gets hurt and drops the timer. Quinn (Jerry O'Connell) leaves the safety of the cave and faces the man-eating allosaurus in an attempt to retrieve the timer. (iTunes)