Maybe a bear's paw fern? .

I'll look it up. I haven't ever heard of that one.

Nope it doesn't look like that one.

*** I take it back. I was looking at it and there is something that looks like that hanging off the edge of the planter. I thought it was a third plant in there -it looks so different.

Yes, maybe resurrection fern. Did you have it sitting under a tree that has some on it?

That it!

It maybe a young Polypodium formosanum, Caterpillar Fern.

My resurrection ferns dont have "feet" . It is definately a polypody (which means many feet in Greek) but polypodies are a large family with lots of species.

Well that's interesting. I had no idea about the feet. I'll check out the caterpillar Fern. I would imagine it's one that is fairly common.