A girl named Miu stumbles upon a mysterious pawnshop where the only item for trade is time itself! Everyone always searches for extra time, but are they willing to exchange something that is more valuable and irreplaceable — their most precious memories? These memories could be wiped out forever if the borrowed time is not returned. Tokiya, the shop owner, recruits Miu to work part time as a "Time Go-Between." Her new boss is sweet, but he has his own motives regarding the time he trades. And Miu must always remember the most important rule: Never speak of the shop to anyone. (Source: CMX)

Every chapter is a self-contained story observing one type of dinosaur per episode. The topic is not limited to "dinosaurs" in the narrow sense, but paleontology in general. Despite the report being explained from a third-person perspective, the "human" observer is not depicted at all. Because of the realistic depiction of the featured creatures the work has been repritned many times by different publishers including Shueisha (1989), Jive (2005) and Fukkan (2018) among others, with some of these being presented in full color. In an 1998 interview published in Weekly Shonen Jump magazine, Akira Toriyama (Dr. Slump, Dragon Ball) was asked, "What is your favorite Jump manga?", where he reccomended "Kyoryu Daikiko", stating that he learned a lot and that it was the only manga he read every week.