Although this is just a 1 minute short, you can really tell it has the Megumi Ishitani touch. She later directed some of the most beloved One Piece episodes (including One Piece Fan Letter) and is one of the best directors in Toei. My understanding is that this was one of her first projects, and you can already see her incredible vision for coloring and "softness". Aside from the visuals, the time constrain of 1 minute makes it hard to tell any complete story, but it does a suprisingly good job at conveying one anyway. Just a typical boy-meets-girl with pretty visuals and a lot of dinosaurs/pre-historicanimals.

It's just 1 minute long, so it's worth a watch.