Recorded history
More complete writing systems were preceded by proto-writing. Early examples are the Jiahu symbols (c. 6600 BCE), Vinča signs (c. 5300 BCE), early Indus script (c. 3500 BCE) and Nsibidi script (c. before 500 CE). There is disagreement concerning exactly when prehistory becomes history, and when proto-writing became "true writing" However, invention of the first writing systems is roughly contemporary with the beginning of the Bronze Age in the late Neolithic of the late 4th millennium BCE. The Sumerian archaic cuneiform script and the Egyptian hieroglyphs are generally considered the earliest writing systems, both emerging out of their ancestral proto-literate symbol systems from 3400–3200 BCE with earliest coherent texts from about 2600 BCE.
Kish tablet
The writing is still purely pictographic, and represents a transitional stage between proto-writing and the emergence of the partly syllabic writing of the cuneiform script proper. The "proto-literate period" of Egypt and Mesopotamia is taken to span about 3500 to 2900 BC. The administrative texts of the Jemdet Nasr period (3100–2900 BC), found among other places at Jemdet Nasr and Tell Uqair represent a further stage in the development from proto-cuneiform to cuneiform, but can still not be identified with certainty as being written in Sumerian, although it is likely.