All corrections
Wikipedia July 9, 2026 at 09:40 AM

en.wikipedia.org/wiki/Sumer

2 corrections found

1
Claim
Early Dynastic III period, c. 23rd century BC
Correction

This date is too late. The Early Dynastic III period is conventionally dated to about 2600–2340 BCE, i.e. mainly the 26th to 24th centuries BCE, not the 23rd century BCE.

Full reasoning

The article dates Early Dynastic III to the 23rd century BC, but standard Mesopotamian chronologies place that period much earlier.

Authoritative chronology references date Early Dynastic III to about 2600–2340 BCE (or very similar ranges such as 2600–2350 BCE). That means the period falls mainly in the 26th–24th centuries BCE and only reaches its end around the mid-24th century BCE, not the 23rd century BCE.

So the phrase is off by roughly a century or more and misplaces the entire period too late.

2 sources
2
Claim
following a period of proto-writing c. 4000 – c. 2500 BC
Correction

This date range is far too late at the end. Mesopotamian proto-cuneiform/proto-writing belongs to the late 4th millennium BCE, not to c. 2500 BCE.

Full reasoning

The article says the relevant Mesopotamian proto-writing period ran until c. 2500 BC. That is not consistent with standard chronologies of proto-cuneiform.

Specialist references place the invention of cuneiform around 3400–3300 BCE, and they date proto-cuneiform / Uruk III / Jemdet Nasr material to roughly 3200–3000 BCE (or about 3100–3000 BCE for specific tablets). By 2500 BCE, Mesopotamia already has fully developed cuneiform texts from the Early Dynastic period; that is no longer the proto-writing stage.

So while a start date in the late 4th millennium can fit, the claim that the proto-writing period extended down to c. 2500 BC is too late by several centuries.

3 sources
Model: OPENAI_GPT_5 Prompt: v1.16.0