The smallest one might have "eyelashes" life a zoa but the bigger one doesn't look like it has a fringe on the the edge. There have not been any zoas or palys near it since I've had it. Hummm, I just don't know.
I have heard of zoas poping up out of nowhere but usually a polyp or two disconnects or is abruptly pulled off and floats around until it settles. Although I can see it coming from a died off colony that just regenerated.