According to the researchers, several symbols engraved on stone "cylinder seals" were developed into signs used in "proto-cuneiform," an early version of the cuneiform script used in southern Mesopotamia, now southern Iraq. The researchers reported their findings in a study published Tuesday (Nov. 5) in the journal Antiquity.

According to the researchers, several symbols engraved on stone "cylinder seals" were developed into signs used in "proto-cuneiform," an early version of the cuneiform script used in southern Mesopotamia, now southern Iraq. The researchers reported their findings in a study published Tuesday (Nov. 5) in the journal Antiquity.

Oldest writing

Cuneiform writing used a stylus to make wedge-shaped impressions in unbaked clay. These impressions created signs representing sounds to make a record of spoken language. The clay could be dried or baked, preserving the signs.