Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests
Amongst diverse and abundant fossil proteaceous pollen in southeastern Australian Late Cretaceous (Campanian–Maastrichtian) sediments are forms identical with pollen of extant taxa within subfamilies Proteoideae, Persoonioideae, Carnarvonioideae, and Grevilleoideae. Taxa identified now have disparat...
Published in: | Canadian Journal of Botany |
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1991
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Online Access: | http://dx.doi.org/10.1139/b91-116 http://www.nrcresearchpress.com/doi/pdf/10.1139/b91-116 |
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crcansciencepubl:10.1139/b91-116 2024-05-19T07:30:39+00:00 Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests Dettmann, Mary E. Jarzen, David M. 1991 http://dx.doi.org/10.1139/b91-116 http://www.nrcresearchpress.com/doi/pdf/10.1139/b91-116 en eng Canadian Science Publishing http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining Canadian Journal of Botany volume 69, issue 4, page 901-906 ISSN 0008-4026 journal-article 1991 crcansciencepubl https://doi.org/10.1139/b91-116 2024-05-02T06:51:25Z Amongst diverse and abundant fossil proteaceous pollen in southeastern Australian Late Cretaceous (Campanian–Maastrichtian) sediments are forms identical with pollen of extant taxa within subfamilies Proteoideae, Persoonioideae, Carnarvonioideae, and Grevilleoideae. Taxa identified now have disparate geographic ranges within Australasia. Sclerophyllous Adenanthos and Stirlingia (Proteoideae) are restricted to the southern Australian Mediterranean climatic region; Persoonia (Persoonioideae) ranges into higher rainfall areas of eastern and northern Australia. Grevillea exul – Grevillea robusta and Telopea (Grevilleoideae) and Carnarvonia (Carnarvonioideae) occur in or fringe rain forests in eastern Australasia, as do other members (Macadamia, Gevuina–Hicksbeachia, Knightia, and Beauprea) reported previously. Pollen evidence thereby confirms evolution of both rain forest and sclerophyll members by the Campanian–Maastrichtian. Turnover of proteaceous pollen taxa near the Cretaceous–Tertiary boundary may reflect contemporaneous modifications to the proteaceous communities. Associated with the Late Cretaceous Proteaceae were diverse conifers (Microcachrys, Lagarostrobus, Podocarpus, Dacrydium, Dacrycarpus, and Araucariaceae), Nothofagus, Ilex, Gunnera, Ascarina, Winteraceae, Trimeniaceae, and probable Epacridaceae. The vegetation, which fringed a narrow estuary separating Antarctica from southern Australia, implies a mosaic of rain forest and sclerophyll communities but has no modern analogue. Key words: Proteaceae, Late Cretaceous, Australia, Antarctica. Article in Journal/Newspaper Antarc* Antarctica Canadian Science Publishing Canadian Journal of Botany 69 4 901 906 |
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Canadian Science Publishing |
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crcansciencepubl |
language |
English |
description |
Amongst diverse and abundant fossil proteaceous pollen in southeastern Australian Late Cretaceous (Campanian–Maastrichtian) sediments are forms identical with pollen of extant taxa within subfamilies Proteoideae, Persoonioideae, Carnarvonioideae, and Grevilleoideae. Taxa identified now have disparate geographic ranges within Australasia. Sclerophyllous Adenanthos and Stirlingia (Proteoideae) are restricted to the southern Australian Mediterranean climatic region; Persoonia (Persoonioideae) ranges into higher rainfall areas of eastern and northern Australia. Grevillea exul – Grevillea robusta and Telopea (Grevilleoideae) and Carnarvonia (Carnarvonioideae) occur in or fringe rain forests in eastern Australasia, as do other members (Macadamia, Gevuina–Hicksbeachia, Knightia, and Beauprea) reported previously. Pollen evidence thereby confirms evolution of both rain forest and sclerophyll members by the Campanian–Maastrichtian. Turnover of proteaceous pollen taxa near the Cretaceous–Tertiary boundary may reflect contemporaneous modifications to the proteaceous communities. Associated with the Late Cretaceous Proteaceae were diverse conifers (Microcachrys, Lagarostrobus, Podocarpus, Dacrydium, Dacrycarpus, and Araucariaceae), Nothofagus, Ilex, Gunnera, Ascarina, Winteraceae, Trimeniaceae, and probable Epacridaceae. The vegetation, which fringed a narrow estuary separating Antarctica from southern Australia, implies a mosaic of rain forest and sclerophyll communities but has no modern analogue. Key words: Proteaceae, Late Cretaceous, Australia, Antarctica. |
format |
Article in Journal/Newspaper |
author |
Dettmann, Mary E. Jarzen, David M. |
spellingShingle |
Dettmann, Mary E. Jarzen, David M. Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests |
author_facet |
Dettmann, Mary E. Jarzen, David M. |
author_sort |
Dettmann, Mary E. |
title |
Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests |
title_short |
Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests |
title_full |
Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests |
title_fullStr |
Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests |
title_full_unstemmed |
Pollen evidence for Late Cretaceous differentiation of Proteaceae in southern polar forests |
title_sort |
pollen evidence for late cretaceous differentiation of proteaceae in southern polar forests |
publisher |
Canadian Science Publishing |
publishDate |
1991 |
url |
http://dx.doi.org/10.1139/b91-116 http://www.nrcresearchpress.com/doi/pdf/10.1139/b91-116 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Canadian Journal of Botany volume 69, issue 4, page 901-906 ISSN 0008-4026 |
op_rights |
http://www.nrcresearchpress.com/page/about/CorporateTextAndDataMining |
op_doi |
https://doi.org/10.1139/b91-116 |
container_title |
Canadian Journal of Botany |
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69 |
container_issue |
4 |
container_start_page |
901 |
op_container_end_page |
906 |
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1799488236091867136 |