I dont believe the story of the origin of our people is right, about the start of our civilizations, and the age of our species. When you just look at how much (((they))) lie about what was 70 years ago (WW2), how much do they lie about things that are 100 years ago? 500 years? 2 millenia? 10 millenia? a million years? or 100 million?

http://www.theepochtimes.com/n3/1416662-200-million-year-old-stone-bears-words-chinese-communist-party-collapses/
>In June 2002, a 270 million-year-old “hidden words stone” was discovered in Guizhou, China. A crack that formed 500 years ago in a large stone revealed six clearly discernible Chinese characters; the characters represent “The Chinese Communist Party Collapses [Zhong Guo Gong Chan Dang Wang].”

http://www.theepochtimes.com/n3/704738-2-8-billion-year-old-spheres-found-in-south-africa-how-were-they-made/

There are stories from civilwar about pterosaurs and american natives talk about the thunderbird which could be such one.

https://en.wikipedia.org/wiki/Mokele-mbembe
This is described to look like a longneck dinosaur, and was allegedly seen africa.

There are fossilized footprints of humans that are 290 million years old
http://www.ancient-code.com/290-million-year-old-human-footprint-has-researchers-scratching-their-heads/

There are rocks showing humans and dinosaurs together
http://www.ancient-origins.net/unexplained-phenomena/do-ica-stones-prove-mankind-coexisted-dinosaurs-advanced-technology-098989

TL;DR: Humans have been around a lot earlier than we are told, and Dinosaurs stayed around for a lot longer than we are told, and there were advanced civilizations even before the Sumerians