 The amber specimen " AMNH NJ @-@ 90 " , which preserved the two holotypes , also preserved a number of other inclusions that give indications as to what the ecology of Archaeomarasmius may have been . Of the approximately forty insect inclusions present , flies in the families Ceratopogonidae and Chironomidae , together with caddisflies of the order Trichoptera , suggest that the mushroom was growing near fresh water . Beetles from the family <unk> , a termite and a <unk> , in addition to the mushroom , are indicators of rotting wood , probably from a tree in the Cupressaceae family . Modern Marasmiaceae members are saprobic — obtaining nutrients by breaking down organic matter — and specimens included with Archaeomarasmius indicate a similar habit for the mushroom . 
