Unwanted icons on start page; reading list?

There are several small icons on the start page of my MacBook that I didn't mean to create and don't want. I have four of these unwanted icons on the far left of the menu bar for websites I've visited and somehow inadvertently "saved" in some way. I'm not sure if these are "reading list" items or called something else. The point is I don't want them, but since I don't know what they're called I can't search for how to delete them. They open as windows when I use Safari, and they just clutter up the screen. The icons appear on the same horizontal bar of the screen as the name of the website; e.g., right now the icons are on the same line as the Apple Community site. The text in this bar says "create a new question-Apple Community," and the small icons are to the left. The menu bar above this one is discussions.apple.com. At some point recently I thought I identified these icons and found instructions for removing them, but the instructions didn't work.