To see a dinosaur in your dream represents an all powerful fear. A fear that is too big to confront or so time consuming that you can’t think of anything else.
To dream of being chased by a dinosaur represents an all powerful fear that you are doing everything possible to avoid. You may feel like life is hanging from a thread.
To dream of killing a dinosaur may reflect waking life situations where you are trying to confront and overcome a big fear you have. Standing up to a person or situation that absolutely terrifies you. Confronting a bully or nightmare scenario.
Example: A young man dreamed of seeing an enormous dinosaur that he felt loved him a lot. In waking life he was considering killing himself. He felt killing himself was a good idea because his life was so terrible, while also feeling that actually carrying out his suicide was terrifying.
Example 2: A young child dreamed of seeing baby dinosaurs. In waking life she was fearing that her family life would be destroyed by her parents upcoming divorce.