The earliest record of a Sumerian creation myth, called The Eridu Genesis by historian Thorkild Jacobsen, is found on a single fragmentary tablet excavated in Nippur by the Expedition of the University of Pennsylvania in 1893, and first recognized by Arno Poebel in 1912. It is written in the Sumerian language and dated to around 1600 BCE. Other Sumerian creation myths from around this date are called the Barton Cylinder, the Debate between sheep and grain and the Debate between Winter and Summer, also found at Nippur.
The beginning of the tablet is lost, but the surviving portion begins by recounting how the gods An, Enlil, Enki, and Ninhursanga created the Sumerians and comfortable conditions for the animals to live and procreate. Kingship then descends from heaven, and the first cities are founded: Eridu, Bad-tibira, Larak, Sippar, and Shuruppak.
After a missing section, we learn that the gods have decided not to save mankind from an impending flood. Zi-ud-sura, the king and gudug priest, learns of this. In the later Akkadian version recorded in the Atra-Hasis Epic, Ea (Sumerian Enki), the god of the waters, warns the hero (Akkadian Atrahasis) and gives him instructions for building an ark. This is missing in the Sumerian fragment, but a mention of Enki taking counsel with himself suggests similar instructions in the Sumerian version.
Before the missing section, the gods have decided to send a flood to destroy humanity. Enki, god of the underworld sea of fresh water and equivalent of Babylonian Ea, warns Ziusudra, the ruler of Shuruppak, to build a large boat, though the directions for the boat are also lost.
When the tablet resumes, it describes the flood. A terrible storm rages for seven days and nights. "The huge boat had been tossed about on the great waters." Then Utu (Sun) appears and Ziusudra opens a window, prostrates himself, and sacrifices an ox and a sheep.
After another break, the text resumes with the flood apparently over, and Ziusudra prostrating himself before An (Sky) and Enlil (Lordbreath), who give him "breath eternal" for "preserving the animals and the seed of mankind".