Hangyodon no Parallel Daisakusen: Kyouryuu Oukoku wa Oosawagi
English title: Hangyodon's Parallel Strategy: Panic at the Dinosaur Kingdom
Japanese title: ハンギョドンのパラレル大作戦 恐竜王国は大さわぎ
Type: OVA
Source: Unknown
Episodes: 1
Status: Finished Airing
Aired: Sep 21, 1992
Duration: 23 min
Rating: PG - Children
Producers: Sanrio
Genres: Sci-Fi
Demographics: Kids

Hangyodon and co. end up getting sent back to the past through a time machine and learn about dinosaurs.