@Indrid-Cold See, I saw the question and immediately thought Mecha-Godzilla, but then started a debate with myself (which I eventually won, although I lost it as well) because Godzilla isn't actually a dinosaur is she so I decided I couldn't have that answer....
I like Dino-Riders, but they were just regular dinosaurs wearing groovy tech. Then I saw you'd kindly created a poll list (should have known really 🙈), and remembered Zoids... we have a winner.