Winfrenatia
From Infogalactic: the planetary knowledge core
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File:Winfrenatia reticulata reconstrucción.jpg
Reconstruction of the transvere view of Winfrenatia.
Winfrenatia is the oldest known terrestrial lichen,[1] known from the lower Devonian Rhynie Chert.
It comprises a thallus, made of layered, aseptate hyphae, with a number of depressions on its top surface. Each depression contains a net of hyphae holding a sheathed cyanobacterium. The fungus appears to be related to the Zygomycetes, and the photobiont resembles the coccoid Gloeocapsa and Chroococcidiopsis.[2] There may be two separate algae, making the lichen a symbiosis of three organisms.[1]
References
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