| 词条 | Winfrenatia |
| 释义 |
Winfrenatia is the oldest known terrestrial lichen,[1] known from fossils preserved in 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 photosynthetic partner of photobiont resembles the coccoid cyanobacteria Gloeocapsa and Chroococcidiopsis. [1][2][3] There may be two separate algae, making the lichen a symbiosis of three organisms.[3]References1. ^1 {{cite journal | first1 = T.N. | last1=Taylor | first2=H. | last2=Hass | first3=W. | last3=Remy | first4=H. | last4=Kerp | date=1995 | title=The oldest fossil lichen | journal=Nature | volume=378 | page=244 | doi=10.1038/378244a0 }} {{devonian-stub}}{{lichen-stub}}{{paleobotany-stub}}2. ^{{cite journal | first=T.N. | last1=Taylor | first2= H. | last2=Hass | first3=H. | last3=Kerp | date=1997 | title=A cyanolichen from the lower Devonian Rhynie chert | journal=American Journal of Botany | volume=84 | issue=7 | pages = 992–1004 | issn=0002-9122 | pmid=21708654 | doi=10.2307/2446290 }} 3. ^1 {{cite journal | doi=10.1134/S0031030109010110 | title=The most ancient terrestrial lichen Winfrenatia reticulata: A new find and new interpretation | year=2009 | last1=Karatygin | first1=I.V. | last2=Snigirevskaya | first2= N.S. | last3=Vikulin |first3=S.V. | journal=Paleontological Journal | volume=43 | pages=107–114 }} 1 : Lichens |
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