Actual "Pages" Show in Media Library

I’ve never noticed this before, I don’t spend a lot of time in the media library. Can someone tell me if this is normal?

A gray image of a Page, it links to the page for editing, just as if I was in my “pages” section except it’s a gray image of a page. its listed along with all my media image files. I’ve seen around 7 or 8 of these so far.

I thought the pages I create stay in the “pages” section only.

I thought media library was just for images?

I took a screen shot of it, but I dont see an option to attach anything here.

I’m really at a lose. Is this something I should be concerned about?

Thanks in advance