Jikuu Tantei Genshi-kun
English title: Flint the Time Detective
Japanese title: 時空探偵ゲンシクン
Alternative titles: Jiku Tantei Genshi-kun, Flint Hammerhead
Type: TV
Source: Manga
Episodes: 39
Status: Finished Airing
Aired: Oct 1, 1998 to Jun 24, 1999
Broadcast: Thursdays at 18:00 (JST)
Duration: 25 min per ep
Rating: PG - Children
Studios: Group TAC
Producers: Nihon Ad Systems, Sanrio
Licensors: Saban Entertainment
Genres: Adventure, Comedy, Fantasy, Mystery, Sci-Fi
Themes: Time Travel

It is the 25th century. The dark lord has 'infected' history with time-devices that could damage history beyond repair. Genshi and his father lived in the prehistorics when they got turned into fossiles. They are discovered and Genshi gets turned back to his original state. With the help of his father, a boy Tony and a girl Sara he has to travel trough time to bring the time-devices back to the land of time so history will be saved.

(Source: ANN)