That's "The amazons", in plural.
Quick edit: Ah wait, I think I see what you're doing with that phrase. It's shorthand for "The Amazon culture" or "Amazon depictions" or something, but it still comes off as strange-sounding to me.
So, sure, it sounds "strange", but it's not new, and people use it when they want to make a generalization with a tone of authority. Probably one might expect to get away with it when talking about an abstract concept or archetype that exists independently of actual people.