The collection includes stories and novellas, united by the theme of childhood in the primitive world. In “The Amazing Adventures of Ig and Tig” by A. Lincoln, as in the educational stories of I. Lyubich-Koshurov “The Age of Dragons” and L. Redfield-Pitty “Dinah and the Dinosaurs”, child heroes will have to face not only mammoths or saber-toothed tigers , but also with... dinosaurs. The classic “Adventures of a Prehistoric Boy” by E. d’Hervilly, familiar to modern readers only from “treatments” or in abbreviation, is presented in the most complete and previously unpublished translation. The book also includes the story by L. Fitch-Perkins “Brave Men: Children of the Stone Age.”