It was a prehistoric showdown on the video charts this week, as that modern Stone Age family fought saber-tooth-and-nail with Jurassic Park. While The Flintstones, coming off its mammoth box office run ($130.5 million), took top rental honors, the priced-to-own clan got jawed out by Jurassic on the sales chart. Meanwhile, renters barely tossed a bone to other new releases: Spike Lee’s Crooklyn broke in at No. 17, and family adventure Black Beauty trotted in at 20. On the laserdisc front, it wasn’t even a horse race: A wide-screen Jurassic stomped way out in front to debut at No. 1.