THE EVOLUTIONARY IMPACT OF AN EPEIRIC SEAWAY ON LATE CRETACEOUS AND PALEOCENE PALYNOFLORAS OF SOUTH AMERICA
Paleogeographic reconstructions hypothesize that during the Cretaceous, South America was split into northern and southern portions by an epeiric seaway. Although the location, extent, and duration of this ancient seaway is debated, some propose that the resulting separation produced a northern Sout...
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Asociación Paleontológica Argentina
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ftdoajarticles:oai:doaj.org/article:c479347f79b04d97818d1b40a9d6ef91 2023-05-15T13:33:02+02:00 THE EVOLUTIONARY IMPACT OF AN EPEIRIC SEAWAY ON LATE CRETACEOUS AND PALEOCENE PALYNOFLORAS OF SOUTH AMERICA Gregory P. Wilson Nan Crystal Arens 2015-10-01T00:00:00Z https://doaj.org/article/c479347f79b04d97818d1b40a9d6ef91 EN ES eng spa Asociación Paleontológica Argentina https://www.peapaleontologica.org.ar/index.php/peapa/article/view/241 https://doaj.org/toc/2469-0228 2469-0228 https://doaj.org/article/c479347f79b04d97818d1b40a9d6ef91 Publicación Electrónica de la Asociación Paleontológica Argentina, Vol 7, Iss 1 (2015) Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 article 2015 ftdoajarticles 2022-12-31T10:22:24Z Paleogeographic reconstructions hypothesize that during the Cretaceous, South America was split into northern and southern portions by an epeiric seaway. Although the location, extent, and duration of this ancient seaway is debated, some propose that the resulting separation produced a northern South American biota that more closely resembled other equatorial biotas, distinct from a southern South American biota that more closely resembled other austral biotas. Palynological data from nine South American countries, five equatorial representatives (including the southeastern U.S. and northwestern Africa), and three austral representatives (Antarctica, Australia, and New Zealand) were assembled into a database that includes more than 450 genera from more than 150 localities spanning the Late Cretaceous and Paleocene epochs. Principal components and cluster analyses of the palynological data separate northern South America from southern South America during the Maastrichtian and Paleocene. During these epochs, northern South America clusters with the equatorial representatives; whereas southern South America clusters with austral representatives. These results suggest that biogeographic barriers, such as epeiric seaways, may have played a significant role in the evolution of distinct terrestrial biotas in South America during the Late Cretaceous and Paleocene. KEY WORDS. South America. Cretaceous. Paleocene. Biogeography. Palynology. Epeiric seaway. Article in Journal/Newspaper Antarc* Antarctica Directory of Open Access Journals: DOAJ Articles Austral New Zealand |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Spanish |
topic |
Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
spellingShingle |
Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 Gregory P. Wilson Nan Crystal Arens THE EVOLUTIONARY IMPACT OF AN EPEIRIC SEAWAY ON LATE CRETACEOUS AND PALEOCENE PALYNOFLORAS OF SOUTH AMERICA |
topic_facet |
Fossil man. Human paleontology GN282-286.7 Paleontology QE701-760 |
description |
Paleogeographic reconstructions hypothesize that during the Cretaceous, South America was split into northern and southern portions by an epeiric seaway. Although the location, extent, and duration of this ancient seaway is debated, some propose that the resulting separation produced a northern South American biota that more closely resembled other equatorial biotas, distinct from a southern South American biota that more closely resembled other austral biotas. Palynological data from nine South American countries, five equatorial representatives (including the southeastern U.S. and northwestern Africa), and three austral representatives (Antarctica, Australia, and New Zealand) were assembled into a database that includes more than 450 genera from more than 150 localities spanning the Late Cretaceous and Paleocene epochs. Principal components and cluster analyses of the palynological data separate northern South America from southern South America during the Maastrichtian and Paleocene. During these epochs, northern South America clusters with the equatorial representatives; whereas southern South America clusters with austral representatives. These results suggest that biogeographic barriers, such as epeiric seaways, may have played a significant role in the evolution of distinct terrestrial biotas in South America during the Late Cretaceous and Paleocene. KEY WORDS. South America. Cretaceous. Paleocene. Biogeography. Palynology. Epeiric seaway. |
format |
Article in Journal/Newspaper |
author |
Gregory P. Wilson Nan Crystal Arens |
author_facet |
Gregory P. Wilson Nan Crystal Arens |
author_sort |
Gregory P. Wilson |
title |
THE EVOLUTIONARY IMPACT OF AN EPEIRIC SEAWAY ON LATE CRETACEOUS AND PALEOCENE PALYNOFLORAS OF SOUTH AMERICA |
title_short |
THE EVOLUTIONARY IMPACT OF AN EPEIRIC SEAWAY ON LATE CRETACEOUS AND PALEOCENE PALYNOFLORAS OF SOUTH AMERICA |
title_full |
THE EVOLUTIONARY IMPACT OF AN EPEIRIC SEAWAY ON LATE CRETACEOUS AND PALEOCENE PALYNOFLORAS OF SOUTH AMERICA |
title_fullStr |
THE EVOLUTIONARY IMPACT OF AN EPEIRIC SEAWAY ON LATE CRETACEOUS AND PALEOCENE PALYNOFLORAS OF SOUTH AMERICA |
title_full_unstemmed |
THE EVOLUTIONARY IMPACT OF AN EPEIRIC SEAWAY ON LATE CRETACEOUS AND PALEOCENE PALYNOFLORAS OF SOUTH AMERICA |
title_sort |
evolutionary impact of an epeiric seaway on late cretaceous and paleocene palynofloras of south america |
publisher |
Asociación Paleontológica Argentina |
publishDate |
2015 |
url |
https://doaj.org/article/c479347f79b04d97818d1b40a9d6ef91 |
geographic |
Austral New Zealand |
geographic_facet |
Austral New Zealand |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_source |
Publicación Electrónica de la Asociación Paleontológica Argentina, Vol 7, Iss 1 (2015) |
op_relation |
https://www.peapaleontologica.org.ar/index.php/peapa/article/view/241 https://doaj.org/toc/2469-0228 2469-0228 https://doaj.org/article/c479347f79b04d97818d1b40a9d6ef91 |
_version_ |
1766038024696627200 |