In 1961, archaeologist Nicolae Vlassa discovered what may be direct evidence of the earliest forms of writing in the world. While conducting an archeological excavation at a Neolithic site in Romania, Vlassa’s team uncovered three small clay tablets containing indecipherable etchings, now known as the Tartaria Tablets. There have been varying interpretations of the meanings of the etchings on the tablets. Some believe the etchings are a primitive form of writing, while others believe they are pictograms, random scribbles, religious symbols, or symbols of ownership.
The tablets are each about 2 ½ inches across. Two are rectangular, and one is round. The round tablet and one rectangular tablet have holes drilled through them. The clay tablets were unbaked, and were discovered along with 26 clay and stone figurines, a shell bracelet, and damaged human bones. Some believe that the tablets were actually found within a sacrificial burial pit. The tablets are inscribed on only one side, and the inscriptions resemble a horned animal, an unclear figure, a vegetal motif, a branch or tree, and a variety of mainly abstract symbols.
Source : ancient-origins.net