Urnula craterium (Devil's Urn)
Urnula craterium from the same location where this one was found https://www.jungledragon.com/image/74920 but several days later. The opening has flared out and there are also some Springtails (Hypogastrura sp.) crawling on the surface.
"Urnula craterium" is a species of cup fungus in the family Sarcosomataceae. It is parasitic on oak and various other hardwood species; it is also saprobic, as the fruit bodies develop on dead wood after it has fallen to the ground. Appearing in early spring, its distinctive goblet-shaped and dark-colored fruit bodies have earned it the common names devil's urn and the gray urn.