Charnia
Genus of frond-like lifeforms / From Wikipedia, the free encyclopedia
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Charnia is an extinct genus of frond-like lifeforms belonging to the Ediacaran biota with segmented, leaf-like ridges branching alternately to the right and left from a zig-zag medial suture (thus exhibiting glide reflection, or opposite isometry). The genus Charnia was named for Charnwood Forest in Leicestershire, England, where the first fossilised specimen was found. Charnia is significant because it was the first Precambrian fossil to be recognized as such.
Charnia | |
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A cast of the holotype of Charnia masoni. Metric scale. | |
Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | †Petalonamae |
Family: | †Charniidae |
Genus: | †Charnia Ford, 1958 |
Species: | †C. masoni |
Binomial name | |
†Charnia masoni Ford, 1958 | |
Synonyms | |
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The living organism grew on the sea floor, 570 to 550 million years ago, and is believed to have fed on nutrients in the water. Despite Charnia's fern-like appearance, it is not a photosynthetic plant or alga because the nature of the fossil beds where specimens have been found implies that it originally lived in deep water, well below the photic zone where photosynthesis can occur.[2]