I remember just a little bit of this movie on tv when I was a kid (sometime in the mid to late 90s) before my parents changed the channel.
There were there people that could teleport/time travel. I don’t remember if they were from the future, past, idk. But there was this giant yellow monster that I thought looked like the rancor from star wars that could teleport as well.
There was this one scene where the main guy witnesses the yellow monster and a t-rex fight (stop motion animation). the t-rex looses and the yellow monster sees the guy and chases him.