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dc.contributor.author
Zodrow, Erwin L.
dc.contributor.author
D`angelo, José Alejandro
dc.contributor.author
Werner Zwanziger, Ulrike
dc.contributor.author
Chen, Banghao
dc.date.available
2017-11-10T20:28:24Z
dc.date.issued
2014-02
dc.identifier.citation
Zodrow, Erwin L.; D`angelo, José Alejandro; Werner Zwanziger, Ulrike; Chen, Banghao; Hair-trichomes-files, and spectrochemistry of Macroneuropteris scheuchzeri (Basal Cantabrian, Sydney Coalfield, Canada); E Schweizerbartsche Verlags; Palaeontographica Abteilung B-palaophytologie; 291; 4-6; 2-2014; 141-153
dc.identifier.issn
0375-0299
dc.identifier.uri
http://hdl.handle.net/11336/27961
dc.description.abstract
Hoffmann's species Neuropteris Scheuchzeri in Keferstein 1827 is generally but not exclusively identified by its 1-4 mm long trichomes or hairs, though he did not mention nor illustrate them in the diagnosis of the species. Basal Cantabrian-age compressions of the species, including 'Odontopteris subcuneata', from Sydney Coalfield, Canada, are oxidized/macerated by Schulze's process from 3 hours to 12 days to track solubility patterns of the trichomes or hairs, and files. Proposed is also a spectrochemical model for Macroneuropteris (ex Neuropteris) scheuchzeri based on carbon 13 nuclear magnetic resonance (13C NMR) experiments, combined with Fourier transform infrared (FTIR) spectroscopy. M. scheuchzeri is chemically similar to other medullosaleans in respect to high aliphatic and low aromatic contents, though FTIR analysis signals preservation variability. Hair invariably drops from compressions during HF treatment, it is opaque, pointed and not organically attached to compressions. A secretory origin is hypothesized that requires confirmation, including explanation of physiological function. Files-hair-trichomes, besides dissolving at different rates when oxidized, are physicomorphologically distinguishable from one another; hence hair and trichomes are not synonymous, as assumed by some authors.Morphological/functional-group changes occur across the basal frond dichotomy (bfd). Apart from the 'pinnule' differences is that above bfd trifoliate foliage shows hair and trichomes, whereas below bfd 'O. subcuneata', for example, shows hair, files, and some trichomes. Most conspicuous in functional-group differences is that aliphatic side-chain branching is lower below than above bfd. It is suggested that aspects of Zimmermann's telomic theory may offer an explanation for the phenomenon.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
E Schweizerbartsche Verlags
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Hair
dc.subject
Secretion
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Trichomes
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Files
dc.subject
Compressions
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Seed Fern
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Spectrochemical Data
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Carboniferous
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Oceanografía, Hidrología, Recursos Hídricos
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Ciencias de la Tierra y relacionadas con el Medio Ambiente
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CIENCIAS NATURALES Y EXACTAS
dc.title
Hair-trichomes-files, and spectrochemistry of Macroneuropteris scheuchzeri (Basal Cantabrian, Sydney Coalfield, Canada)
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-09-26T18:58:29Z
dc.journal.volume
291
dc.journal.number
4-6
dc.journal.pagination
141-153
dc.journal.pais
Alemania
dc.journal.ciudad
Stuttgart
dc.description.fil
Fil: Zodrow, Erwin L.. Cape Breton University. Paleobaiogy Laboratory; Canadá
dc.description.fil
Fil: D`angelo, José Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Provincia de Mendoza. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales. Universidad Nacional de Cuyo. Instituto Argentino de Nivología, Glaciología y Ciencias Ambientales; Argentina. Universidad Nacional de Cuyo. Facultad de Ciencias Exactas y Naturales; Argentina
dc.description.fil
Fil: Werner Zwanziger, Ulrike. Dalhousie University Halifax; Canadá
dc.description.fil
Fil: Chen, Banghao. Dalhousie University Halifax; Canadá
dc.journal.title
Palaeontographica Abteilung B-palaophytologie
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.schweizerbart.de/papers/palab/detail/290/81895/Hair_trichomes_files_and_spectrochemistry_of_Macroneuropteris_scheuchzeri_Basal_Cantabrian_Sydney_Coalfield_Canada
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