 The combined characters of Archaeomarasmius indicate a relation to the modern family Tricholomataceae , with a close similarity to the genera Marasmius and Marasmiellus . Both genera are noted for marcescence , toughening and drying , rather than putrifying . This property would increase the chances of a mushroom becoming entombed in amber . However , a number of other species are also possible close relatives of Archaeomarasmius , mostly in Tricholomataceae , although some species in the family Strophariaceae are also marasmioid . The authors suggest it may also be appropriate to classify Archaeomarasmius more conservatively as incertae sedis ( of uncertain placement ) within the Tricholomatoceae , Agaricales , or Homobasidiomycetes . 
