A New Global Palaeobiogeographical Model for the Late Mesozoic and Early Tertiary
Late Mesozoic palaeobiogeography has been characterized by a distinction between the northern territories of Laurasia and the southern landmasses of Gondwana. The repeated discovery of Gondwanan lineages in Laurasia has led to the proposal of alternative scenarios to explain these anomalous occurren...
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fthighwire:oai:open-archive.highwire.org:sysbio:61/4/553 2023-05-15T13:48:22+02:00 A New Global Palaeobiogeographical Model for the Late Mesozoic and Early Tertiary Ezcurra, Martín D. Agnolín, Federico L. 2012-07-01 00:00:00.0 text/html http://sysbio.oxfordjournals.org/cgi/content/short/61/4/553 https://doi.org/10.1093/sysbio/syr115 en eng Oxford University Press http://sysbio.oxfordjournals.org/cgi/content/short/61/4/553 http://dx.doi.org/10.1093/sysbio/syr115 Copyright (C) 2012, Society of Systematic Biologists Regular Articles TEXT 2012 fthighwire https://doi.org/10.1093/sysbio/syr115 2013-05-26T23:08:20Z Late Mesozoic palaeobiogeography has been characterized by a distinction between the northern territories of Laurasia and the southern landmasses of Gondwana. The repeated discovery of Gondwanan lineages in Laurasia has led to the proposal of alternative scenarios to explain these anomalous occurrences. A new biogeographical model for late Mesozoic terrestrial ecosystems is here proposed in which Europe and “Gondwanan” territories possessed a common Eurogondwanan fauna during the earliest Cretaceous. Subsequently, following the Hauterivian, the European territories severed from Africa and then connected to Asiamerica resulting in a faunal interchange. This model explains the presence of Gondwanan taxa in Laurasia and the absence of Laurasian forms in the southern territories during the Cretaceous. In order to test this new palaeobiogeographical model, tree reconciliation analyses (TRAs) were performed based on biogeographical signals provided by a supertree of late Mesozoic archosaurs. The TRAs found significant evidence for the presence of an earliest Cretaceous Eurogondwanan fauna followed by a relatively short-term Gondwana–Laurasia dichotomy. The analysis recovered evidence for a biogeographical reconnection of the European territories with Africa and South America–Antarctica during the Campanian to Maastrichtian time-slice. This biogeographical scenario appears to continue through the early Tertiary and sheds light on the trans-Atlantic disjunct distributions of several extant plant and animal groups. Text Antarc* Antarctica HighWire Press (Stanford University) Systematic Biology 61 4 553 566 |
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English |
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Regular Articles |
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Regular Articles Ezcurra, Martín D. Agnolín, Federico L. A New Global Palaeobiogeographical Model for the Late Mesozoic and Early Tertiary |
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Regular Articles |
description |
Late Mesozoic palaeobiogeography has been characterized by a distinction between the northern territories of Laurasia and the southern landmasses of Gondwana. The repeated discovery of Gondwanan lineages in Laurasia has led to the proposal of alternative scenarios to explain these anomalous occurrences. A new biogeographical model for late Mesozoic terrestrial ecosystems is here proposed in which Europe and “Gondwanan” territories possessed a common Eurogondwanan fauna during the earliest Cretaceous. Subsequently, following the Hauterivian, the European territories severed from Africa and then connected to Asiamerica resulting in a faunal interchange. This model explains the presence of Gondwanan taxa in Laurasia and the absence of Laurasian forms in the southern territories during the Cretaceous. In order to test this new palaeobiogeographical model, tree reconciliation analyses (TRAs) were performed based on biogeographical signals provided by a supertree of late Mesozoic archosaurs. The TRAs found significant evidence for the presence of an earliest Cretaceous Eurogondwanan fauna followed by a relatively short-term Gondwana–Laurasia dichotomy. The analysis recovered evidence for a biogeographical reconnection of the European territories with Africa and South America–Antarctica during the Campanian to Maastrichtian time-slice. This biogeographical scenario appears to continue through the early Tertiary and sheds light on the trans-Atlantic disjunct distributions of several extant plant and animal groups. |
format |
Text |
author |
Ezcurra, Martín D. Agnolín, Federico L. |
author_facet |
Ezcurra, Martín D. Agnolín, Federico L. |
author_sort |
Ezcurra, Martín D. |
title |
A New Global Palaeobiogeographical Model for the Late Mesozoic and Early Tertiary |
title_short |
A New Global Palaeobiogeographical Model for the Late Mesozoic and Early Tertiary |
title_full |
A New Global Palaeobiogeographical Model for the Late Mesozoic and Early Tertiary |
title_fullStr |
A New Global Palaeobiogeographical Model for the Late Mesozoic and Early Tertiary |
title_full_unstemmed |
A New Global Palaeobiogeographical Model for the Late Mesozoic and Early Tertiary |
title_sort |
new global palaeobiogeographical model for the late mesozoic and early tertiary |
publisher |
Oxford University Press |
publishDate |
2012 |
url |
http://sysbio.oxfordjournals.org/cgi/content/short/61/4/553 https://doi.org/10.1093/sysbio/syr115 |
genre |
Antarc* Antarctica |
genre_facet |
Antarc* Antarctica |
op_relation |
http://sysbio.oxfordjournals.org/cgi/content/short/61/4/553 http://dx.doi.org/10.1093/sysbio/syr115 |
op_rights |
Copyright (C) 2012, Society of Systematic Biologists |
op_doi |
https://doi.org/10.1093/sysbio/syr115 |
container_title |
Systematic Biology |
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61 |
container_issue |
4 |
container_start_page |
553 |
op_container_end_page |
566 |
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1766249191869251584 |