Dinosaurs were reptiles that lived some sixty-five million years ago, in the Mesozoic era. They seldom appear in dreams. When they do, they usually relate to basic, instinctive urges, such as survival and reproduction of the species. Dinosaurs symbolize memories and feelings from early childhood that are having an effect on your current life. They can also indicate letting go of something from your past that has been holding you back. It's a sign of increased confidence and faster progress in the future.