the evolution of fungi has been going on since fungi diverged from other life around 1.5 billion years ago, with the glomaleans branching from the "higher fungi" at ~, according to dna analysis. (schüssler et al., 2001; tehler et al., 2000) fungi probably colonized the land during the cambrian, over , (taylor & osborn, 1996) but terrestrial fossils only become uncontroversial and common during the devonian, .