Osmundastrum pulchellum

Osmundastrum pulchellum
Temporal range: Latest Pliensbachian-Toarcian(?)
~183–180 Ma
↓
Local Volcanic neck suggest 176.7 ± 0.5 Ma, Late Toarcian Age
Holotype rhizome
Scientific classification Edit this 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

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]

  1. ^ a b Bomfleur, B.; Grimm, G. W.; McLoughlin, S. (2017). "The fossil Osmundales (royal ferns)—a phylogenetic network analysis, revised taxonomy, and evolutionary classification of anatomically preserved trunks and rhizomes". PeerJ. 5: e3433. doi:10.7717/peerj.3433. PMC 5508817. PMID 28713650.
  2. ^ a b Bomfleur., B.; Grimm, G. W.; McLoughlin., S. (2015). "Osmunda pulchella sp. nov. from the Jurassic of Sweden—reconciling molecular and fossil evidence in the phylogeny of modern royal ferns (Osmundaceae)". BMC Evolutionary Biology. 15 (1): 126. doi:10.1186/s12862-015-0400-7. PMC 4487210. PMID 26123220.
  3. ^ a b c Bomfleur, B.; McLoughlinVajda, V. (2014). Fossilized nuclei and chromosomes reveal 180 million years of genomic stasis in royal ferns. Science, 343(6177), 1376-1377, S.; Vajda, V. (2014). "Fossilized nuclei and chromosomes reveal 180 million years of genomic stasis in royal ferns". Science. 343 (6177): 1376–1377. Bibcode:2014Sci...343.1376B. doi:10.1126/science.1249884. PMID 24653037. S2CID 38248823. Retrieved 30 July 2021.{{cite journal}}: CS1 maint: multiple names: authors list (link) CS1 maint: numeric names: authors list (link)
  4. ^ Vajda, V.; McLoughlin, S.; Bomfleur, B. (2014). "Fossilfyndet i Korsaröd". Geologiskt Forum-Geological Society of Sweden. 82 (1): 24–29. Retrieved 27 October 2021.
  5. ^ McLoughlin, S.; Bomfleur, B.; Vajda, V. (2014). "A phenomenal fossil fern, forgotten for forty years". Deposits Magazine. 40 (1): 16–21. Retrieved 27 October 2021.
  6. ^ McLoughlin, S.; Bomfleur, B. (2016). "Biotic interactions in an exceptionally well preserved osmundaceous fern rhizome from the Early Jurassic of Sweden". Palaeogeography, Palaeoclimatology, Palaeoecology. 464 (1): 86–96. Bibcode:2016PPP...464...86M. doi:10.1016/j.palaeo.2016.01.044.
  7. ^ Qu, Y.; McLoughlin, M.; van Zuilen, M. A.; Whitehouse, M.; Engdahl, A.; Vajda, V. (2019). "Evidence for molecular structural variations in the cytoarchitectures of a Jurassic plant". Geology. 47 (4): 325–329. Bibcode:2019Geo....47..325Q. doi:10.1130/g45725.1. S2CID 84841297.