An extinct kind of winged fruit found at several Eocene sites in California and Oregon. western USA. occurs in association with pinnately compound anacardiaceous leaves that have been called Rhus mixta . The samaras were previously treated along with isolated leaves from the Chalk Bluffs flora of California in an extinct sapindaceous genus. https://www.jmannino.com/mega-pick-Royal-Nomadic-5413-Rug-Ivory-Black-limited-super/