Five dispersed medullosalean male organs, one species? Late Pennsylvanian Sydney Coalfield, Canada.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00228745%3A_____%2F21%3AN0000011" target="_blank" >RIV/00228745:_____/21:N0000011 - isvavai.cz</a>
Result on the web
<a href="http://www.geology.cz/bulletin/fulltext/1789_Zodrow_210110.pdf" target="_blank" >http://www.geology.cz/bulletin/fulltext/1789_Zodrow_210110.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3140/bull.geosci.1789" target="_blank" >10.3140/bull.geosci.1789</a>
Alternative languages
Result language
angličtina
Original language name
Five dispersed medullosalean male organs, one species? Late Pennsylvanian Sydney Coalfield, Canada.
Original language description
Five dispersed medullosalean male-organ compressions are embedded within a few centimeters of each other in basal Cantabrian fluviolacustrine sediments, Sydney Coalfield, Canada. Exposed are variable shapes, surface features and apparent sizes. The paper deals with the cause of the repose differences, and if one organ species was preserved in five differing positions, or conversely, if five species are involved. New insights based on the macerated external cover (theca) include soluble multicellular trichomes in en echelon formation that are interspersed with rare heteromorphic stomata, and imbricated pattern of prepollen sacs on the internal layer. The organs are interpreted as synangiate structures with large ellipsoidal/circular monolete prepollen grains (overall 447 × 320 μm average, n = 150) of Monoletes Ibrahim ex Schopf. Based on observational data, it appears that all organs belong to one biological species and the enormous size range of prepollen grains could express natural variability, where the huge grains are associated with tripartite segmentation and the smaller grains with quadripartite segmentation in Dolerotheca Halle. The anatomical positions of diverse cuticular and acellular fragments could not be ascertained in the organs.The proximal, distal, or lateral resting positions, relative to the bedding plane of deposition, are haphazard. The studied organs compare with Dolerotheca, although specific assignment is deferred because of an unresolved anatomy in these compressions. The discovery of these five specimens, in concert with previous discoveries, strengthens the hypothesis of an organic connection with Alethopteris pseudograndinioides. • Key words: compression, seed fern, male organs, micromorphology, taphonomy.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - 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
Result continuities
Project
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Continuities
V - Vyzkumna aktivita podporovana z jinych verejnych zdroju
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Bulletin of Geosciences
ISSN
1214-1119
e-ISSN
1802-8225
Volume of the periodical
96
Issue of the periodical within the volume
1
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
23
Pages from-to
29–51
UT code for WoS article
000606671200003
EID of the result in the Scopus database
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