 When it was reported , Protomycena electra was the third species of fossil agaric fungus to be described . The two species <unk> <unk> and <unk> <unk> are also known from the amber mines of the Dominican Republic , while the fourth species <unk> <unk> is from the older , Cretaceous age New Jersey Amber . With the 2007 publication of a fifth extinct agaric species , <unk> <unk> , the minimum age for the Agaricales order was pushed back to the <unk> ( approximately 100 Ma ) . 
