Winfrenatia is a genus that contains the oldest-known terrestrial lichen,[1] occurring in fossils preserved in the lower Devonian Rhynie chert.

The genus contains the single species Winfrenatia reticulata, named for the texture of its surface.

[2] It comprises a thallus, made of layered, aseptate hyphae, with a number of depressions on its top surface.

The fungus appears to be related to the Zygomycetes, and the photosynthetic partner of photobiont resembles the coccoid cyanobacteria Gloeocapsa and Chroococcidiopsis.

You can help Wikipedia by expanding it.This article about lichens or lichenology is a stub.