 These early names may be fictional, and include some legendary and mythological figures, such as Alulim and Dumizid.The end of the Uruk period coincided with the Piora oscillation, a dry period from c. 3200–2900 BC that marked the end of a long wetter, warmer climate period from about 9,000 to 5,000 years ago, called the Holocene climatic optimum.The dynastic period begins c. 2900 BC and was associated with a shift from the temple establishment headed by council of elders led by a priestly "En" (a male figure when it was a temple for a goddess, or a female figure when headed by a male god) towards a more secular Lugal (Lu = man, Gal = great) and includes such legendary patriarchal figures as Enmerkar, Lugalbanda and Gilgamesh—who reigned shortly before the historic record opens c. 2700 BC, when the now deciphered syllabic writing started to develop from the early pictograms.