Found on decaying organic material

Possibly Palomino cup Peziza repanda one of the Pezizaceae which is a large group of cup fungi found on a variety of decaying organic material including organic household waste. Well-decayed logs may sport the Palomino cup fungus usually on the wood of hardwoods. Soil rich in decayed wood and occasionally that which is covered with wood chips may support Palomino cup; growing alone, gregariously, or in clusters.