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dc.contributor.author
Zodrow, Erwin L.
dc.contributor.author
Helleur, Robert
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Werner-Zwanziger, Ulrike
dc.contributor.author
Chen, Banghao
dc.contributor.author
D` Angelo, José Alejandro
dc.date.available
2016-03-14T15:02:43Z
dc.date.issued
2013-02-07
dc.identifier.citation
Zodrow, Erwin L.; Helleur, Robert; Werner-Zwanziger, Ulrike; Chen, Banghao; D` Angelo, José Alejandro; Spectrochemical study of coalified Trigonocarpus grandis (Pennsylvanian tree-fern ovule, Canada): Implications for fossil-organ linkage; Elsevier Science; International Journal Of Coal Geology; 109-110; 7-2-2013; 24-35
dc.identifier.issn
0166-5162
dc.identifier.uri
http://hdl.handle.net/11336/4764
dc.description.abstract
Five coalified ovules of the type Trigonocarpus grandis are investigated four of which co-occur with tree-fern foliage Alethopteris pseudograndinioides in the medullosalean forest (basal Cantabrian), and the fifth occurs in top Asturian D (Sydney Coalfield, Canada). Addressed are questions of variability (what is a coalified ovule?), comparison with petrified ovules, pyrolysates and the original make-up of the grandis seeds, and can similar chemistry proxy for organic connection between ovule and foliage?
The results demonstrate variable preservation quality despite similar thermal-maturity levels in the geological interval in which the ovules were collected. Nevertheless, the proposed T. grandis model is based on evidence from epidermises associated with inner and outer integuments, and a two-layered nucellus with granulose exine that is covered by a diaphanous layer (tectum?) and nucellar cuticle. The latter separates the inner cuticle of the inner integumentary surface from the megaspore membrane. Parenchymatous and sclerenchymatous cell structures are rare, whereas evidence for integuments, vasculature, and sclerotesta is equivocal. Overall, these features compare with petrified seeds.
13C nuclear-magnetic resonance analysis suggests that the A. pseudograndinioides tree fern bore T. grandis seeds. Pyrolysates from low and high molecular weights can almost exclusively be grouped with alkenes and aromatics; phenolics, furan and branched alkenes; and with n-alkene/n-alkane homologous series (~ 3 to 1) for cuticles from the inner integumentary surface which suggests a cutin-based, aliphatic-rich biomacromolecule. More generally, preservation is presumed correlative with aliphatic content, but not exclusively, and organ–organ linkage by spectrochemical means certainly has potential as a new research vector in palaeobotany.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Elsevier Science
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.subject
Histochemistry
dc.subject
Coalified Ovules
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Pyrolysates
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Carboniferous
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Paleontología
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Spectrochemical study of coalified Trigonocarpus grandis (Pennsylvanian tree-fern ovule, Canada): Implications for fossil-organ linkage
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-03-30 10:35:44.97925-03
dc.journal.volume
109-110
dc.journal.pagination
24-35
dc.journal.pais
Países Bajos
dc.journal.ciudad
Amsterdam
dc.conicet.avisoEditorial
Permitted deposit due to Funding Body, Institutional and Governmental policy or mandate, may be required to comply with embargo periods of 12 months to 48 months
dc.description.fil
Fil: Zodrow, Erwin L.. Cape Breton Universit. Palaeobotanical Laboratory; Canadá
dc.description.fil
Fil: Helleur, Robert. Memorial University of Newfoundland. Department of Chemistry; Canadá
dc.description.fil
Fil: Werner-Zwanziger, Ulrike. Dalhousie Universit. Department of Chemistry; Canadá
dc.description.fil
Fil: Chen, Banghao. Dalhousie Universit. Department of Chemistry; Canadá
dc.description.fil
Fil: D` Angelo, José Alejandro. Cape Breton Universit. Palaeobotanical Laboratory; Canadá. Consejo Nacional de Investigaciones Científicas y Técnicas. Científico Tecnológico Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
dc.journal.title
International Journal Of Coal Geology
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.sciencedirect.com/science/article/pii/S0166516213000220
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1016/j.coal.2013.01.013
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/issn/0166-5162
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