[adorno]

Dinosaurs had flat feet so their writings are rather primitive.

Primitive may be right. But that still didn't stop them from leaving plenty of "feet" tracks in many parts of the world, enough to let the world know "Dino was here". But the question is, have there been any "feet" tracks from about the same time as the ancient civilizations?

[Ro_Thunder]

You ask: But the question is, have there been any “feet” tracks from about the same time as the ancient civilizations?

The answer is YES. In Glen Rose, Texas it has been found, for one.

Among others, IIRC.

http://images.google.com/images?hl=en&safe=off&q=Glen%20Rose%2C%20Texas%2C%20Dinosaur%20tracks%20with%20human%20footprints&um=1&ie=UTF-8&sa=N&tab=wi