fortean art

I'm not sure if this is the right section, so move it if it's not. http://www.boredpanda.com/skulls-skeletons-thomas-theodore-merrylin-home-london/

OK, gang: There's a lively and fascinating discussion (splodgey painting...) about art, and Intaglio suggested a thread on Fortean art. What would define Fortean art? What examples are there of it--perhaps the Neolithic/16th century paintings of what could be UFOs? My breath is bated...