I've found a few maple seedlings in my yard, and I've potted them so I can raise them in a protected place until they're big enough to plant in one of my beds. But I don't know what kind of maple they are. Can you help me identify them?

{{gwi:382882}} This one I've had since last summer or fall. I'm not even 100% sure it's a maple -- what do you think?

{{gwi:382883}} Last week, I dug up about five of these from a shrub bed. They all look like the same species, and I was wondering where they came from. Then, I had this vague recollection that just MAYBE I threw some leftover Bigtooth maple seeds over there after I couldn't get them to germinate in my basement. But I'm not sure I did. I say Bigtooth maple, because the leaves look different than my Rocky Mountain maple that I grew from seed, which is now about four feet tall. I gathered a bunch of maple seeds up in a nearby canyon, and I'm sure some of them were Bigtooth and some were Rocky Mountain. What do you think it is?