I vaguely remember some dinosaur video documentary type thing that was a mix of claymation and ... possibly stop-motion? With some voice-overed diagrams? Something with a kid´s science fair project? But it ended with a claymation volcano exploding and all the dinosaurs dying in pain, and it was very anticlimactic and traumatizing for 4-year-old me. I´ve basically assumed it was the result of a fever dream when I had pneumonia.
I´m not even sure I WANT to find that.