They predate Jeebus by 4,000 years and that's the point.
According to the Sumerian Texts as translated by Sitchin, the Human Race was created not by a benevolent "god' but by a race of ETs called the Anunaki who used us as slaves.
I'll be busy most of today and probably all day tomorrow so I won't be able to reply to questions, or debate the topic, but Google up Sitchin and read what he has to say. He's one of the few who is able to read Sumerian and has dedicated his life to study and translation.
IMO, the Iraqi Museum housed new untranslated tablets that contained (among other things) information that would shake and destroy "modern" religions. This info had to be contained at all costs.