This a lot of TWO (2) official Universal Studios/Amblin promotional bookmarks promoting Steven Spielberg's big screen adaptation of Michael Crichton's best selling novel, Jurassic Park! The T-Rex book mark has copyright date of 1992 - 1 YEAR before the movie actually was released! The Triceratops copyright says 1993. Jurassic Park stars Sam Neill, Laura Dern, Jeff Goldblum, Ariana Richards, Joseph Mazello, Samuel Jackson, Wayne Knight and Richard Attenborough.