Home/Discover/Case Closed - Approaching the Mystery of the Ancient Dinosaurs!Case Closed - Approaching the Mystery of the Ancient Dinosaurs!名探偵コナン 古代恐竜の謎に迫れ!Case Closed - Approaching the Mystery of the Ancient Dinosaurs!2002 · OVA · 1 episodes▶ Watch episode 1+ My list OverviewEpisodesThe storyOVAApproaching the Mystery of the Ancient Dinosaurs!MysteryEpisodesChoose your next chapterEpisode titles follow your spoiler shield.Edit watched progress1Episode 130 min▶More in this worldRelated animeDetective ConanTV · 1996