According to Wikipedia Poetry as an art form predates written Text. The earliest poetry is believed to have been recited or sung, employed as a way of remembering oral history, genealogy and law. Poetry appears most among the earliest records of literate cultures, with poetic fragments found on early monoliths, runestones and stalea.
Poetry probably dates back to cavemen and the earliest shamans who chronicled events in picture stories. This cave painting in Lascaux, France is thought to date from between 15000 and 13000BC
Poetry of an Introvert 