Doraemon (1979)

S1E8 Dinosaur Hunting

Doraemon and Nobita embark on their inaugural journey through time when they stumble upon a mysterious drawer. This unexpected adventure takes them back ten billion years. During their escapades, Doraemon successfully shrinks one dinosaur but misplaces his gun. They narrowly evade a second dinosaur, although Nobita accidentally leaves his glasses behind. Fast forward to the present, and scientists are left astounded when they discover the ancient spectacles, sparking intriguing theories about their origins.