Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica
A new anatomically preserved megasporophyll, Lonchiphyllum aplospermum, is described from permineralized peat collected on Skaar Ridge in the central Transantarctic Mountains. This new genus contains vascular features similar to those of the leaf genus Glossopteris schopfii, which is the exclusive l...
Published in: | International Journal of Plant Sciences |
---|---|
Main Authors: | , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
University of Chicago Press
2015
|
Subjects: | |
Online Access: | http://hdl.handle.net/1808/16943 https://doi.org/10.1086/668222 |
id |
ftunivkansas:oai:kuscholarworks.ku.edu:1808/16943 |
---|---|
record_format |
openpolar |
spelling |
ftunivkansas:oai:kuscholarworks.ku.edu:1808/16943 2023-05-15T13:32:09+02:00 Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica Ryberg, Patricia Elizabeth Taylor, Edith L. 2015-03-03T19:58:20Z http://hdl.handle.net/1808/16943 https://doi.org/10.1086/668222 unknown University of Chicago Press Ryberg, Patricia E.; Taylor, Edith L. (2013). "Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica." International Journal of Plant Sciences, 174(3):396-405. http://www.dx.doi.org/10.1086/668222. 1058-5893 http://hdl.handle.net/1808/16943 doi:10.1086/668222 openAccess Glossopteridales glossopterids ovules megasporophylls Permian Antarctica Article 2015 ftunivkansas https://doi.org/10.1086/668222 2022-08-26T13:16:28Z A new anatomically preserved megasporophyll, Lonchiphyllum aplospermum, is described from permineralized peat collected on Skaar Ridge in the central Transantarctic Mountains. This new genus contains vascular features similar to those of the leaf genus Glossopteris schopfii, which is the exclusive leaf genus in the specimens in which the sporophylls were found. The vasculature of the sporophyll consists of a central vascular region with bordered pitting and anastomosing lateral bundles with helical-scalariform thickenings. Ovules are attached oppositely to suboppositely to lateral veins on the adaxial surface of the sporophyll. There is an abundance of bisaccate pollen of the Protohaploxypinus type at the base of the ovules. The ovules of Lonchiphyllum are small (1.1 mm × 0.97 mm) and ovate and have an unornamented integument. Comparison with anatomically known ovules from Skaar Ridge, i.e., Plectilospermum elliotii, Choanostoma verruculosum, and Lakkosia kerasata and Homevaleia gouldii from the Bowen Basin of Australia, supports the classification of Lonchiphyllum as a glossopterid. The differences in the sarcotesta and sclerotesta of all the Skaar Ridge ovules may indicate specialization for pollination or dispersal. Article in Journal/Newspaper Antarc* Antarctica The University of Kansas: KU ScholarWorks Glossopteris ENVELOPE(-113.717,-113.717,-84.733,-84.733) Skaar Ridge ENVELOPE(163.250,163.250,-84.817,-84.817) Transantarctic Mountains International Journal of Plant Sciences 174 3 396 405 |
institution |
Open Polar |
collection |
The University of Kansas: KU ScholarWorks |
op_collection_id |
ftunivkansas |
language |
unknown |
topic |
Glossopteridales glossopterids ovules megasporophylls Permian Antarctica |
spellingShingle |
Glossopteridales glossopterids ovules megasporophylls Permian Antarctica Ryberg, Patricia Elizabeth Taylor, Edith L. Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica |
topic_facet |
Glossopteridales glossopterids ovules megasporophylls Permian Antarctica |
description |
A new anatomically preserved megasporophyll, Lonchiphyllum aplospermum, is described from permineralized peat collected on Skaar Ridge in the central Transantarctic Mountains. This new genus contains vascular features similar to those of the leaf genus Glossopteris schopfii, which is the exclusive leaf genus in the specimens in which the sporophylls were found. The vasculature of the sporophyll consists of a central vascular region with bordered pitting and anastomosing lateral bundles with helical-scalariform thickenings. Ovules are attached oppositely to suboppositely to lateral veins on the adaxial surface of the sporophyll. There is an abundance of bisaccate pollen of the Protohaploxypinus type at the base of the ovules. The ovules of Lonchiphyllum are small (1.1 mm × 0.97 mm) and ovate and have an unornamented integument. Comparison with anatomically known ovules from Skaar Ridge, i.e., Plectilospermum elliotii, Choanostoma verruculosum, and Lakkosia kerasata and Homevaleia gouldii from the Bowen Basin of Australia, supports the classification of Lonchiphyllum as a glossopterid. The differences in the sarcotesta and sclerotesta of all the Skaar Ridge ovules may indicate specialization for pollination or dispersal. |
format |
Article in Journal/Newspaper |
author |
Ryberg, Patricia Elizabeth Taylor, Edith L. |
author_facet |
Ryberg, Patricia Elizabeth Taylor, Edith L. |
author_sort |
Ryberg, Patricia Elizabeth |
title |
Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica |
title_short |
Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica |
title_full |
Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica |
title_fullStr |
Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica |
title_full_unstemmed |
Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica |
title_sort |
lonchiphyllum aplospermum gen. et sp. nov.: an anatomically preserved glossopterid megasporophyll from the upper permian of skaar ridge, transantarctic mountains, antarctica |
publisher |
University of Chicago Press |
publishDate |
2015 |
url |
http://hdl.handle.net/1808/16943 https://doi.org/10.1086/668222 |
long_lat |
ENVELOPE(-113.717,-113.717,-84.733,-84.733) ENVELOPE(163.250,163.250,-84.817,-84.817) |
geographic |
Glossopteris Skaar Ridge Transantarctic Mountains |
geographic_facet |
Glossopteris Skaar Ridge Transantarctic Mountains |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
Ryberg, Patricia E.; Taylor, Edith L. (2013). "Lonchiphyllum aplospermum gen. et sp. nov.: An Anatomically Preserved Glossopterid Megasporophyll from the Upper Permian of Skaar Ridge, Transantarctic Mountains, Antarctica." International Journal of Plant Sciences, 174(3):396-405. http://www.dx.doi.org/10.1086/668222. 1058-5893 http://hdl.handle.net/1808/16943 doi:10.1086/668222 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1086/668222 |
container_title |
International Journal of Plant Sciences |
container_volume |
174 |
container_issue |
3 |
container_start_page |
396 |
op_container_end_page |
405 |
_version_ |
1766024582840451072 |