STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. IV. TRIASSIC OVULES
Small, anatomically preserved ovules are described from specimens collected at Fremouw Peak in the central Transantarctic Mountains. The ovules occur within a silicified peat in the upper part of the Fremouw Formation, which is considered to be Early to Middle Triassic. Ovules are radially symmetric...
Published in: | American Journal of Botany |
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Format: | Article in Journal/Newspaper |
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Online Access: | http://dx.doi.org/10.1002/j.1537-2197.1989.tb15079.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fj.1537-2197.1989.tb15079.x https://onlinelibrary.wiley.com/doi/pdf/10.1002/j.1537-2197.1989.tb15079.x http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.1002%2Fj.1537-2197.1989.tb15079.x |
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crwiley:10.1002/j.1537-2197.1989.tb15079.x 2024-06-02T07:58:17+00:00 STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. IV. TRIASSIC OVULES Perovich, Nancy E. Taylor, Edith L. National Science Foundation 1989 http://dx.doi.org/10.1002/j.1537-2197.1989.tb15079.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fj.1537-2197.1989.tb15079.x https://onlinelibrary.wiley.com/doi/pdf/10.1002/j.1537-2197.1989.tb15079.x http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.1002%2Fj.1537-2197.1989.tb15079.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor American Journal of Botany volume 76, issue 7, page 992-999 ISSN 0002-9122 1537-2197 journal-article 1989 crwiley https://doi.org/10.1002/j.1537-2197.1989.tb15079.x 2024-05-03T10:34:35Z Small, anatomically preserved ovules are described from specimens collected at Fremouw Peak in the central Transantarctic Mountains. The ovules occur within a silicified peat in the upper part of the Fremouw Formation, which is considered to be Early to Middle Triassic. Ovules are radially symmetrical and ovoid, with an integument that consists of a narrow endotesta and a complex sclerotesta. The bilayered nucellus has a characteristic scalloped appearance and is attached to the integument only at the base. Of 43 ovules examined, 50 to 60% contain cellular megagametophyte tissue. One specimen contains a possible archegonium with embryo. Although the ovules have not been found attached, their possible affinities are discussed in relation to the known flora from this locality and other, comparableāaged floras from Gondwana. Article in Journal/Newspaper Antarc* Antarctica Wiley Online Library Fremouw Peak ENVELOPE(164.333,164.333,-84.283,-84.283) Transantarctic Mountains American Journal of Botany 76 7 992 999 |
institution |
Open Polar |
collection |
Wiley Online Library |
op_collection_id |
crwiley |
language |
English |
description |
Small, anatomically preserved ovules are described from specimens collected at Fremouw Peak in the central Transantarctic Mountains. The ovules occur within a silicified peat in the upper part of the Fremouw Formation, which is considered to be Early to Middle Triassic. Ovules are radially symmetrical and ovoid, with an integument that consists of a narrow endotesta and a complex sclerotesta. The bilayered nucellus has a characteristic scalloped appearance and is attached to the integument only at the base. Of 43 ovules examined, 50 to 60% contain cellular megagametophyte tissue. One specimen contains a possible archegonium with embryo. Although the ovules have not been found attached, their possible affinities are discussed in relation to the known flora from this locality and other, comparableāaged floras from Gondwana. |
author2 |
National Science Foundation |
format |
Article in Journal/Newspaper |
author |
Perovich, Nancy E. Taylor, Edith L. |
spellingShingle |
Perovich, Nancy E. Taylor, Edith L. STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. IV. TRIASSIC OVULES |
author_facet |
Perovich, Nancy E. Taylor, Edith L. |
author_sort |
Perovich, Nancy E. |
title |
STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. IV. TRIASSIC OVULES |
title_short |
STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. IV. TRIASSIC OVULES |
title_full |
STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. IV. TRIASSIC OVULES |
title_fullStr |
STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. IV. TRIASSIC OVULES |
title_full_unstemmed |
STRUCTURALLY PRESERVED FOSSIL PLANTS FROM ANTARCTICA. IV. TRIASSIC OVULES |
title_sort |
structurally preserved fossil plants from antarctica. iv. triassic ovules |
publisher |
Wiley |
publishDate |
1989 |
url |
http://dx.doi.org/10.1002/j.1537-2197.1989.tb15079.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fj.1537-2197.1989.tb15079.x https://onlinelibrary.wiley.com/doi/pdf/10.1002/j.1537-2197.1989.tb15079.x http://api.wiley.com/onlinelibrary/chorus/v1/articles/10.1002%2Fj.1537-2197.1989.tb15079.x |
long_lat |
ENVELOPE(164.333,164.333,-84.283,-84.283) |
geographic |
Fremouw Peak Transantarctic Mountains |
geographic_facet |
Fremouw Peak Transantarctic Mountains |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
American Journal of Botany volume 76, issue 7, page 992-999 ISSN 0002-9122 1537-2197 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/j.1537-2197.1989.tb15079.x |
container_title |
American Journal of Botany |
container_volume |
76 |
container_issue |
7 |
container_start_page |
992 |
op_container_end_page |
999 |
_version_ |
1800741585551360000 |