kivikaudelta
Kivikaudelta is a Finnish linguistic and archaeological term meaning “from the Stone Age.” Grammatically, it is the elative form of kivikausi (the Stone Age) and is used to express origin, source, or dating. In scholarly and descriptive texts it often appears in phrases such as kivikaudelta peräisin (originating from the Stone Age) or kivikaudelta ajoitettu (dated to the Stone Age).
In the Finnish context the Stone Age refers to the prehistoric period preceding later metal-using cultures
The term is a descriptive, non-proper noun used to indicate temporal origin rather than a specific place.