Why did plants diversify so much in the Devonian?

For some time after the event, fungal species were the dominant form of terrestrial life. Though they only made up approximately 10% of remains found before and just after the extinction horizon, fungal species subsequently grew rapidly to make up nearly 100% of the available fossil record. However, some researchers argue that fungal species did not dominate terrestrial life, even though their remains have only been found in shallow marine deposits. Alternatively, others argue that fungal hypha are simply better suited for preservation and survival in the environment, creating an inaccurate representation of certain species in the fossil record.