Mikrokivikausi
 Mikrokivikausi (Finnish for micro stone age) is a Finnish comic strip drawn by Harri Wallu Vaalio.Mikrokivikausi is a humorous comic set in a nondescript period of prehistory. Although named after the stone age it has included dinosaurs and other animals that were extinct long before the stone age.The central characters in the comic are cavemen one of which (the main character) has invented the computer.