Osmundastrum pulchellum
Extinct species of fern / From Wikipedia, the free encyclopedia
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Osmundastrum pulchellum is an extinct species of Osmundastrum, leptosporangiate ferns in the family Osmundaceae from the lower Jurassic (Pliensbachian-Toarcian?) Djupadal Formation of Southern Sweden.[1][2][3][4] It remained unstudied for 40 years.[5] It is one of the most exceptional fossil ferns ever found, preserving intact calcified (thus dead) tissue with DNA and cells.[3] Its exceptional preservation has allowed the study of the DNA relationships with extant Osmundaceae ferns, proving a 180-million-year genomic stasis.[3] It has also preserved its biotic interactions and even ongoing mitosis.[6][7][1][2]
Osmundastrum pulchellum | |
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Holotype rhizome | |
Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Division: | Polypodiophyta |
Class: | Polypodiopsida |
Order: | Osmundales |
Family: | Osmundaceae |
Genus: | Osmundastrum |
Species: | †O. pulchellum |
Binomial name | |
†Osmundastrum pulchellum (Bomfleur, B., Grimm, G. W., & McLoughlin, S.) C.Presl | |
Synonyms | |
Osmunda pulchella Bomfleur, B., Grimm, G. W., & McLoughlin, S., 2015 |