Tracking the Mesozoic distribution of Gunnera: comparison with the fossil pollen species Tricolpites reticulatus Cookson
The morphology of the exine of Late Cretaceous and Tertiary specimens of Tricolpites reticulatus previously documented from Kerguelen, the Antarctic Peninsula, and the Otway Basin of southeastern Australia has been re-examined and compared with the three pollen types identified in the genus Gunnera....
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2004
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ftunivqespace:oai:espace.library.uq.edu.au:UQ:69936 2023-05-15T13:59:08+02:00 Tracking the Mesozoic distribution of Gunnera: comparison with the fossil pollen species Tricolpites reticulatus Cookson Wanntorp, L. Dettmann, M. E. Jarzen, D. M. 2004-12-01 https://espace.library.uq.edu.au/view/UQ:69936 eng eng Elsevier BV doi:10.1016/j.revpalbo.2004.06.001 issn:0034-6667 Plant Sciences Paleontology Gunnera Tricolpites Reticulatus Tricolpites Microreticulatus Pollen Kerguelen Island Australia Antarctica Biogeography Nothofagus Region 270401 Plant Systematics Taxonomy and Phylogeny C1 780105 Biological sciences 0607 Plant Biology Journal Article 2004 ftunivqespace https://doi.org/10.1016/j.revpalbo.2004.06.001 2020-11-16T23:20:48Z The morphology of the exine of Late Cretaceous and Tertiary specimens of Tricolpites reticulatus previously documented from Kerguelen, the Antarctic Peninsula, and the Otway Basin of southeastern Australia has been re-examined and compared with the three pollen types identified in the genus Gunnera. An Antarctic specimen of T reticulatus (Maastrichtian) has a uniform reticulum with elongated lumina, similar to that characterising pollen type 3a of Gunnera macrophylla (subgenus Pseudogunnera). Late Cretaceous (Maastrichtian) Australian specimens of T reticulatus differ; specimens from McNamara resemble pollen of subgenera Pseudogunnera and Milligania of type 3a or type 3b, while specimens of T reticulatus from Princes show more rounded and equidimensional lumina and are therefore tentatively attributed to pollen type 2 found in subgenera Gunnera, Misandra and Panke. Kerguelen Island T reticulatus (Miocene) are distinct from Vega Island specimens: a closer resemblance of Kerguelen T reticulatus and pollen type 2 of extant Gunnera is hypothesised. A comparison between specimens of the North American Tricolpites reticulatus/microreticulatus and pollen of Gunnera is also made. The clear similarity of the North American specimens of Tricolpites microreticulatus and pollen of Gunnera in shape and in the exine surface features of pollen suggests that this taxon should not be separated from T reticulatus but should be treated as a synonym of this species. (C) 2004 Elsevier B.V. All rights reserved. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctica Vega Island The University of Queensland: UQ eSpace Antarctic The Antarctic Antarctic Peninsula Kerguelen Kerguelen Island ENVELOPE(69.500,69.500,-49.250,-49.250) Vega Island ENVELOPE(-57.500,-57.500,-63.833,-63.833) Review of Palaeobotany and Palynology 132 3-4 163 174 |
institution |
Open Polar |
collection |
The University of Queensland: UQ eSpace |
op_collection_id |
ftunivqespace |
language |
English |
topic |
Plant Sciences Paleontology Gunnera Tricolpites Reticulatus Tricolpites Microreticulatus Pollen Kerguelen Island Australia Antarctica Biogeography Nothofagus Region 270401 Plant Systematics Taxonomy and Phylogeny C1 780105 Biological sciences 0607 Plant Biology |
spellingShingle |
Plant Sciences Paleontology Gunnera Tricolpites Reticulatus Tricolpites Microreticulatus Pollen Kerguelen Island Australia Antarctica Biogeography Nothofagus Region 270401 Plant Systematics Taxonomy and Phylogeny C1 780105 Biological sciences 0607 Plant Biology Wanntorp, L. Dettmann, M. E. Jarzen, D. M. Tracking the Mesozoic distribution of Gunnera: comparison with the fossil pollen species Tricolpites reticulatus Cookson |
topic_facet |
Plant Sciences Paleontology Gunnera Tricolpites Reticulatus Tricolpites Microreticulatus Pollen Kerguelen Island Australia Antarctica Biogeography Nothofagus Region 270401 Plant Systematics Taxonomy and Phylogeny C1 780105 Biological sciences 0607 Plant Biology |
description |
The morphology of the exine of Late Cretaceous and Tertiary specimens of Tricolpites reticulatus previously documented from Kerguelen, the Antarctic Peninsula, and the Otway Basin of southeastern Australia has been re-examined and compared with the three pollen types identified in the genus Gunnera. An Antarctic specimen of T reticulatus (Maastrichtian) has a uniform reticulum with elongated lumina, similar to that characterising pollen type 3a of Gunnera macrophylla (subgenus Pseudogunnera). Late Cretaceous (Maastrichtian) Australian specimens of T reticulatus differ; specimens from McNamara resemble pollen of subgenera Pseudogunnera and Milligania of type 3a or type 3b, while specimens of T reticulatus from Princes show more rounded and equidimensional lumina and are therefore tentatively attributed to pollen type 2 found in subgenera Gunnera, Misandra and Panke. Kerguelen Island T reticulatus (Miocene) are distinct from Vega Island specimens: a closer resemblance of Kerguelen T reticulatus and pollen type 2 of extant Gunnera is hypothesised. A comparison between specimens of the North American Tricolpites reticulatus/microreticulatus and pollen of Gunnera is also made. The clear similarity of the North American specimens of Tricolpites microreticulatus and pollen of Gunnera in shape and in the exine surface features of pollen suggests that this taxon should not be separated from T reticulatus but should be treated as a synonym of this species. (C) 2004 Elsevier B.V. All rights reserved. |
format |
Article in Journal/Newspaper |
author |
Wanntorp, L. Dettmann, M. E. Jarzen, D. M. |
author_facet |
Wanntorp, L. Dettmann, M. E. Jarzen, D. M. |
author_sort |
Wanntorp, L. |
title |
Tracking the Mesozoic distribution of Gunnera: comparison with the fossil pollen species Tricolpites reticulatus Cookson |
title_short |
Tracking the Mesozoic distribution of Gunnera: comparison with the fossil pollen species Tricolpites reticulatus Cookson |
title_full |
Tracking the Mesozoic distribution of Gunnera: comparison with the fossil pollen species Tricolpites reticulatus Cookson |
title_fullStr |
Tracking the Mesozoic distribution of Gunnera: comparison with the fossil pollen species Tricolpites reticulatus Cookson |
title_full_unstemmed |
Tracking the Mesozoic distribution of Gunnera: comparison with the fossil pollen species Tricolpites reticulatus Cookson |
title_sort |
tracking the mesozoic distribution of gunnera: comparison with the fossil pollen species tricolpites reticulatus cookson |
publisher |
Elsevier BV |
publishDate |
2004 |
url |
https://espace.library.uq.edu.au/view/UQ:69936 |
long_lat |
ENVELOPE(69.500,69.500,-49.250,-49.250) ENVELOPE(-57.500,-57.500,-63.833,-63.833) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Kerguelen Kerguelen Island Vega Island |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Kerguelen Kerguelen Island Vega Island |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctica Vega Island |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctica Vega Island |
op_relation |
doi:10.1016/j.revpalbo.2004.06.001 issn:0034-6667 |
op_doi |
https://doi.org/10.1016/j.revpalbo.2004.06.001 |
container_title |
Review of Palaeobotany and Palynology |
container_volume |
132 |
container_issue |
3-4 |
container_start_page |
163 |
op_container_end_page |
174 |
_version_ |
1766267550580080640 |