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Reconstructing Kras...
Reconstructing Krassilovia mongolica supports recognition of a new and unusual group of Mesozoic conifers
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- Herrera, Fabiany (författare)
- Chicago Botanic Garden
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- Shi, Gongle (författare)
- State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology
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- Mays, Chris, 1983- (författare)
- Naturhistoriska riksmuseet,Enheten för paleobiologi
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- Ichinnorov, Niiden (författare)
- Institute of Paleontology and Geology, Mongolian Academy of Sciences
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- Takahashi, Masamichi (författare)
- Department of Environmental Sciences, Faculty of Science, Niigata University
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- Bevitt, Joseph (författare)
- Australian Centre for Neutron Scattering, Australian Nuclear Science and Technology Organisation
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- Herendeen, Patrick (författare)
- Chicago Botanic Garden
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- Crane, Peter Robert (författare)
- Oak Spring Gardens
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(creator_code:org_t)
- 2020-01-15
- 2020
- Engelska.
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Ingår i: PLOS ONE. - : PLoS. - 1932-6203. ; 15:1, s. 1-21
- Relaterad länk:
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https://nrm.diva-por... (primary) (Raw object)
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https://journals.plo...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Previously unrecognized anatomical features of the cone scales of the enigmatic Early Cretaceous conifer Krassilovia mongolica include the presence of transversely oriented paracytic stomata, which is unusual for all other extinct and extant conifers. Identical stomata arepresent on co-occurring broad, linear, multiveined leaves assigned to Podozamites harrisii, providing evidence that K. mongolica and P. harrisii are the seed cones and leaves of the same extinct plant. Phylogenetic analyses of the relationships of the reconstructed Krassilovia plant place it in an informal clade that we name the Krassilovia Clade, which also includes Swedenborgia cryptomerioides–Podozamites schenkii, and Cycadocarpidium erdmanni–Podozamites schenkii. All three of these plants have linear leaves that are relatively broad compared to most living conifers, and that are also multiveined with transversely oriented paracytic stomata. We propose that these may be general features of the Krassilovia Clade. Paracytic stomata, and other features of this new group, recall features of extant and fossil Gnetales, raising questions about the phylogenetic homogeneity of the conifer clade similar to those raised by phylogenetic analyses of molecular data.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Annan geovetenskap och miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Other Earth and Related Environmental Sciences (hsv//eng)
Nyckelord
- Cretaceous
- Mongolia
- Coniferales
- Ecosystems and species history
- Ekosystem och arthistoria
- The changing Earth
- Den föränderliga jorden
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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