The genus is solely known from the early Miocene, Burdigalian stage, Dominican amber deposits on the island of Hispaniola.

[1] The genus is known only from the holotype fossil, which is a single fruiting body currently residing in the private collection owned by Yale Goldman of Connecticut United States.

[1][3] With the 2007 publication of a fifth extinct agaric species, Palaeoagaracites antiquus the age for the order was pushed back to the Albian (approximately 100 Ma).

However the thickness of the amber entombing the specimen prevented study finer details, such as spore ornamentation and pileus texture, which would have clarified the relations.

Despite the lack of visible details, enough characters are present to distinguish Aureofungus from the three other known amber fossil species.