It's a Platycerium bifurcatum. They normally grow as an epiphyte on trees or as a lithophyte on the side of rock faces. They're often sold in pots but that orientation can be problematic for them.

Great, thank you! I will put it on a bark or wood slab.

I saw these for sale in zone 6 Pa at a nursery near Greensburg, Pa. I assume they may be hard to keep alive in winter in zone 6, I don't have a nice warm humid environment for winter for 1 of them. Unless I put a clear tent in the basement for it, my family uses a dehumidifier in the basement, so I would have to put a tent over it, etc.