Plot: Nobita's father is old fashioned, so Nobita uses Doraemon's ray gun to make things as they would have been in the past or future, then starts on living things with a mouse de-evolutionized 200,000,000 years to become a large dinosaur and his father evolved into a future man.

Doraemon - Season 1 - Development and Degradation Radiation (Episode 91)
Episode Aired On:
Monday, July 16 1979
45 years ago
Monday, July 16 1979
45 years ago