Intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the Prince Charles Mountains, Antarctica
Permineralized sporangia from Late Permian sediments of the Amery Group in the Prince Charles Mountains, East Antarctica, are assigned to Arberiella sp. cf A. africana Pant ana Nautiyal. These sporangia contain between 2000 and 3000 taeniate, saccate pollen grains that are predominantly haploxylonoi...
Main Authors: | , , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
University of Chicago Press
1997
|
Subjects: | |
Online Access: | https://lup.lub.lu.se/record/634868 |
id |
ftulundlup:oai:lup.lub.lu.se:76f38f1a-ba03-441c-bf5a-b924863ced82 |
---|---|
record_format |
openpolar |
spelling |
ftulundlup:oai:lup.lub.lu.se:76f38f1a-ba03-441c-bf5a-b924863ced82 2023-05-15T13:48:54+02:00 Intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the Prince Charles Mountains, Antarctica Lindström, Sofie McLoughlin, Stephen Drinnan, Andrew N 1997 https://lup.lub.lu.se/record/634868 eng eng University of Chicago Press https://lup.lub.lu.se/record/634868 scopus:0030712109 International Journal of Plant Sciences; 158(5), pp 673-684 (1997) ISSN: 1058-5893 Geology contributiontojournal/article info:eu-repo/semantics/article text 1997 ftulundlup 2023-02-01T23:27:15Z Permineralized sporangia from Late Permian sediments of the Amery Group in the Prince Charles Mountains, East Antarctica, are assigned to Arberiella sp. cf A. africana Pant ana Nautiyal. These sporangia contain between 2000 and 3000 taeniate, saccate pollen grains that are predominantly haploxylonoid bisaccate and referable to the palynotaxon Protohaploxypinus limpidus (Balme and Hennelly) Balme and Flayford. However, the sporangia also contain greater than 4% of diploxylonoid bisaccate forms comparable to Striatopodocarpidites cancellatus (Balme and Hennelly) Hart 1963, together with sporadic monosaccate and trisaccate grains that, if found dispersed, would be assigned to several different pollen form genera. Morphometric analysis of in situ bisaccate pollen grains and taeniate bisaccate pollen in the dispersed palynoflora indicates that in situ grains occupy only the smaller end of the total size range. The tendency for in situ grains to cluster into two different size groups may reflect differential predispersal expansion of the corpus. The in situ pollen grains are variable in most qualitative and quantitative features used for taxonomic discrimination of dispersed taeniate bisaccate pollen, and this may lead to unreliable estimates of Late Permian floristic diversity if an overly restrictive species delimitation scheme is used. Article in Journal/Newspaper Antarc* Antarctica East Antarctica Prince Charles Mountains Lund University Publications (LUP) East Antarctica Amery ENVELOPE(-94.063,-94.063,56.565,56.565) Prince Charles Mountains ENVELOPE(67.246,67.246,-71.427,-71.427) |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Geology |
spellingShingle |
Geology Lindström, Sofie McLoughlin, Stephen Drinnan, Andrew N Intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the Prince Charles Mountains, Antarctica |
topic_facet |
Geology |
description |
Permineralized sporangia from Late Permian sediments of the Amery Group in the Prince Charles Mountains, East Antarctica, are assigned to Arberiella sp. cf A. africana Pant ana Nautiyal. These sporangia contain between 2000 and 3000 taeniate, saccate pollen grains that are predominantly haploxylonoid bisaccate and referable to the palynotaxon Protohaploxypinus limpidus (Balme and Hennelly) Balme and Flayford. However, the sporangia also contain greater than 4% of diploxylonoid bisaccate forms comparable to Striatopodocarpidites cancellatus (Balme and Hennelly) Hart 1963, together with sporadic monosaccate and trisaccate grains that, if found dispersed, would be assigned to several different pollen form genera. Morphometric analysis of in situ bisaccate pollen grains and taeniate bisaccate pollen in the dispersed palynoflora indicates that in situ grains occupy only the smaller end of the total size range. The tendency for in situ grains to cluster into two different size groups may reflect differential predispersal expansion of the corpus. The in situ pollen grains are variable in most qualitative and quantitative features used for taxonomic discrimination of dispersed taeniate bisaccate pollen, and this may lead to unreliable estimates of Late Permian floristic diversity if an overly restrictive species delimitation scheme is used. |
format |
Article in Journal/Newspaper |
author |
Lindström, Sofie McLoughlin, Stephen Drinnan, Andrew N |
author_facet |
Lindström, Sofie McLoughlin, Stephen Drinnan, Andrew N |
author_sort |
Lindström, Sofie |
title |
Intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the Prince Charles Mountains, Antarctica |
title_short |
Intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the Prince Charles Mountains, Antarctica |
title_full |
Intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the Prince Charles Mountains, Antarctica |
title_fullStr |
Intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the Prince Charles Mountains, Antarctica |
title_full_unstemmed |
Intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the Prince Charles Mountains, Antarctica |
title_sort |
intraspecific variation of taeniate bisaccate pollen within permian glossopterid sporangia, from the prince charles mountains, antarctica |
publisher |
University of Chicago Press |
publishDate |
1997 |
url |
https://lup.lub.lu.se/record/634868 |
long_lat |
ENVELOPE(-94.063,-94.063,56.565,56.565) ENVELOPE(67.246,67.246,-71.427,-71.427) |
geographic |
East Antarctica Amery Prince Charles Mountains |
geographic_facet |
East Antarctica Amery Prince Charles Mountains |
genre |
Antarc* Antarctica East Antarctica Prince Charles Mountains |
genre_facet |
Antarc* Antarctica East Antarctica Prince Charles Mountains |
op_source |
International Journal of Plant Sciences; 158(5), pp 673-684 (1997) ISSN: 1058-5893 |
op_relation |
https://lup.lub.lu.se/record/634868 scopus:0030712109 |
_version_ |
1766249937771692032 |