Unique list of Sumerian gods,  c.  2400-2200 BC, SumerIn Sumerian cuneiform on clay, a list of Sumerian gods in order of seniority and importance: Enlil, Ninlil, Enki, Nergal, Hendursanga, Inanna-Zabalam, Ninebgal, Inanna, Utu and Nanna.
No other copy of this particular list is so far known. Sumerians, Babylonians and Assyrians had thousands of gods so they needed extensive lists to keep track of them. Visit this page for a cool guide to Mesopotamian deities.
Sumer was located in southern Mesopotamia, modern-day southern Iraq, during the Chalcolithic and Early Bronze Age.
Etruscan Bronze Mask of Achelous, c. 520 BC
In Greek mythology, Achelous was the patron deity of the “silver-swirling” Achelous River, which is the largest river of Greece, and thus the chief of all river deities, since every river was believed to have its own spirit. His name is pre-Greek, its meaning unknown. In ancient art his image is often reduced to just a bearded mask, and he is believed to be the origin of the medieval Green Man. 
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