Numerous models and children's toys depicting "Tyrannosaurus" have been produced, particularly in promotion of the "Jurassic Park" films. The Carnegie Museum Dinosaur Collection toy line released two versions of the dinosaur, with the second brought in line with more modern scientific understanding. Sinclair Oil ads from the 1950s frequently featured "T. rex", and products from radio-controlled helicopter models to a rifle cartridge (the .577 T-Rex) have been named after the dinosaur. In music, the popular 1970s glam rock band T. Rex took their name from the famous dinosaur.