Linking Dolerotheca-like prepollen organs with Alethopteris pseudograndinioides foliage and assessing chemical properties of in situ prepollen grains: Implications for reconstructing Pennsylvanian-age alethopterid seed ferns

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00228745%3A_____%2F17%3AN0000001" target="_blank" >RIV/00228745:_____/17:N0000001 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S0166516217301945" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0166516217301945</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.coal.2017.08.004" target="_blank" >10.1016/j.coal.2017.08.004</a>

Result language

angličtina

Original language name

Linking Dolerotheca-like prepollen organs with Alethopteris pseudograndinioides foliage and assessing chemical properties of in situ prepollen grains: Implications for reconstructing Pennsylvanian-age alethopterid seed ferns

Original language description

Detached and coalified prepollen organs with huge monolete grains are reported for the first time from the Canadian Sydney Coalfield of Pennsylvanian age. Besides regarding these organs as Dolerotheca-like, the putative question is which medullosalean seed fern produced these organs? We investigated for the first time the physicochemistry of the prepollen to determine characteristic behavior under oxidative conditions, reporting results from solid- and liquid states infrared spectroscopy, liquid 1H magnetic resonance, high precision liquid and pyrolytic-gas chromatography, and mass/charge ratios. The organs were tripartite, campanulate (bell-shaped) with lobate margins ca. 20 mm in diameter and ca. 30 mm long, and contained hundreds of elongate sporangia that were up to 8 mm long and filled with huge up to 833 μm long but probably juvenile Monoletes prepollen. These grains were covered by an acellular sporangial layer, which in turn, was covered by a cuticle bearing the imprint of near-isodiametric cells. The principal evidence for linking the Dolerotheca-like structure to foliar Alethopteris pseudograndinioides is shared occurrences of papillate cyclocytic stomata and trichomes, and the physical association of the alethopterid foliage and the prepollen organs. The physicochemical results point to diagenetic influence on the surface morphology and taxonomic parameters, refractory nature of the prepollen (as with extant pollen), and their aliphatic characteristics that are different from the aromatic extant pollen.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10506 - Paleontology

Project

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Continuities

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2017

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

International Journal of Coal Geology

ISSN

0166-5162

e-ISSN

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Volume of the periodical

Neuveden

Issue of the periodical within the volume

183

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

13

Pages from-to

65-77

UT code for WoS article

000417777100006

EID of the result in the Scopus database

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