Invertebrates from the Low Head Member (Polonez Cove Formation, Oligocene) at Vaureal Peak, King George Island, West Antarctica
Eight taxa of marine invertebrates, including two new bivalve species, are described from the Low Head Member of the Polonez Cove Formation (latest early Oligocene) cropping out in the Vaureal Peak area, King George Island, West Antarctica. The fossil assemblage includes representatives of Brachiopo...
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Cambridge University Press
2008
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Online Access: | http://hdl.handle.net/11449/42536 https://doi.org/10.1017/S0954102007000867 |
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ftunivespir:oai:repositorio.unesp.br:11449/42536 2023-07-02T03:30:38+02:00 Invertebrates from the Low Head Member (Polonez Cove Formation, Oligocene) at Vaureal Peak, King George Island, West Antarctica Quaglio, Fernanda Anelli, Luiz E. Santos, Paulo R. dos Perinott, José Alexandre de Jesus Rocha-Campos, Antonio C. Universidade Estadual Paulista (UNESP) 2008-04-01 149-168 http://hdl.handle.net/11449/42536 https://doi.org/10.1017/S0954102007000867 eng eng Cambridge University Press Antarctic Science 1.394 0,643 http://dx.doi.org/10.1017/S0954102007000867 Antarctic Science. New York: Cambridge Univ Press, v. 20, n. 2, p. 149-168, 2008. 0954-1020 http://hdl.handle.net/11449/42536 doi:10.1017/S0954102007000867 WOS:000254926000006 WOS000254926000006.pdf closedAccess bivalves brachiopods Bryozoa Echinoidea Palaeogene Pectinidae Polychaeta taxonomy info:eu-repo/semantics/article 2008 ftunivespir https://doi.org/10.1017/S0954102007000867 2023-06-12T16:12:50Z Eight taxa of marine invertebrates, including two new bivalve species, are described from the Low Head Member of the Polonez Cove Formation (latest early Oligocene) cropping out in the Vaureal Peak area, King George Island, West Antarctica. The fossil assemblage includes representatives of Brachiopoda (genera Neothyris sp. and Liothyrella sp.), Bivalvia (Adamussium auristriatum sp. nov., ?Adamussium cf. A. alanbeui Jonkers, and Limatula (Antarctolima) ferraziana sp. nov.), Bryozoa, Polychaeta (serpulid tubes) and Echinodermata. Specimens occur in debris flows deposits of the Low Head Member, as part of a fan delta setting in a high energy, shallow marine environment. Liothyrella sp., Adamussium auristriatum sp. nov. and Limatula ferraziana sp. nov. are among the oldest records for these genera in King George Island. In spite of their restrict number and diversification, bivalves and brachiopods from this study display an overall dispersal pattern that roughly fits in the clockwise circulation of marine currents around Antarctica accomplished in two steps. The first followed the opening of the Tasmanian Gateway at the Eocene/Oligocene boundary, along the eastern margin of Antarctica, and the second took place in post-Palaeogene time, following the Drake Passage opening between Antarctic Peninsula and South America, along the western margin of Antarctica. Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Drake Passage King George Island West Antarctica Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP Antarctic Antarctic Peninsula Drake Passage King George Island Low Head ENVELOPE(-58.133,-58.133,-62.150,-62.150) Polonez Cove ENVELOPE(-58.131,-58.131,-62.153,-62.153) West Antarctica Antarctic Science 20 2 149 168 |
institution |
Open Polar |
collection |
Universidade Estadual Paulista São Paulo: Repositório Institucional UNESP |
op_collection_id |
ftunivespir |
language |
English |
topic |
bivalves brachiopods Bryozoa Echinoidea Palaeogene Pectinidae Polychaeta taxonomy |
spellingShingle |
bivalves brachiopods Bryozoa Echinoidea Palaeogene Pectinidae Polychaeta taxonomy Quaglio, Fernanda Anelli, Luiz E. Santos, Paulo R. dos Perinott, José Alexandre de Jesus Rocha-Campos, Antonio C. Invertebrates from the Low Head Member (Polonez Cove Formation, Oligocene) at Vaureal Peak, King George Island, West Antarctica |
topic_facet |
bivalves brachiopods Bryozoa Echinoidea Palaeogene Pectinidae Polychaeta taxonomy |
description |
Eight taxa of marine invertebrates, including two new bivalve species, are described from the Low Head Member of the Polonez Cove Formation (latest early Oligocene) cropping out in the Vaureal Peak area, King George Island, West Antarctica. The fossil assemblage includes representatives of Brachiopoda (genera Neothyris sp. and Liothyrella sp.), Bivalvia (Adamussium auristriatum sp. nov., ?Adamussium cf. A. alanbeui Jonkers, and Limatula (Antarctolima) ferraziana sp. nov.), Bryozoa, Polychaeta (serpulid tubes) and Echinodermata. Specimens occur in debris flows deposits of the Low Head Member, as part of a fan delta setting in a high energy, shallow marine environment. Liothyrella sp., Adamussium auristriatum sp. nov. and Limatula ferraziana sp. nov. are among the oldest records for these genera in King George Island. In spite of their restrict number and diversification, bivalves and brachiopods from this study display an overall dispersal pattern that roughly fits in the clockwise circulation of marine currents around Antarctica accomplished in two steps. The first followed the opening of the Tasmanian Gateway at the Eocene/Oligocene boundary, along the eastern margin of Antarctica, and the second took place in post-Palaeogene time, following the Drake Passage opening between Antarctic Peninsula and South America, along the western margin of Antarctica. |
author2 |
Universidade Estadual Paulista (UNESP) |
format |
Article in Journal/Newspaper |
author |
Quaglio, Fernanda Anelli, Luiz E. Santos, Paulo R. dos Perinott, José Alexandre de Jesus Rocha-Campos, Antonio C. |
author_facet |
Quaglio, Fernanda Anelli, Luiz E. Santos, Paulo R. dos Perinott, José Alexandre de Jesus Rocha-Campos, Antonio C. |
author_sort |
Quaglio, Fernanda |
title |
Invertebrates from the Low Head Member (Polonez Cove Formation, Oligocene) at Vaureal Peak, King George Island, West Antarctica |
title_short |
Invertebrates from the Low Head Member (Polonez Cove Formation, Oligocene) at Vaureal Peak, King George Island, West Antarctica |
title_full |
Invertebrates from the Low Head Member (Polonez Cove Formation, Oligocene) at Vaureal Peak, King George Island, West Antarctica |
title_fullStr |
Invertebrates from the Low Head Member (Polonez Cove Formation, Oligocene) at Vaureal Peak, King George Island, West Antarctica |
title_full_unstemmed |
Invertebrates from the Low Head Member (Polonez Cove Formation, Oligocene) at Vaureal Peak, King George Island, West Antarctica |
title_sort |
invertebrates from the low head member (polonez cove formation, oligocene) at vaureal peak, king george island, west antarctica |
publisher |
Cambridge University Press |
publishDate |
2008 |
url |
http://hdl.handle.net/11449/42536 https://doi.org/10.1017/S0954102007000867 |
long_lat |
ENVELOPE(-58.133,-58.133,-62.150,-62.150) ENVELOPE(-58.131,-58.131,-62.153,-62.153) |
geographic |
Antarctic Antarctic Peninsula Drake Passage King George Island Low Head Polonez Cove West Antarctica |
geographic_facet |
Antarctic Antarctic Peninsula Drake Passage King George Island Low Head Polonez Cove West Antarctica |
genre |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Drake Passage King George Island West Antarctica |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Antarctic Science Antarctica Drake Passage King George Island West Antarctica |
op_relation |
Antarctic Science 1.394 0,643 http://dx.doi.org/10.1017/S0954102007000867 Antarctic Science. New York: Cambridge Univ Press, v. 20, n. 2, p. 149-168, 2008. 0954-1020 http://hdl.handle.net/11449/42536 doi:10.1017/S0954102007000867 WOS:000254926000006 WOS000254926000006.pdf |
op_rights |
closedAccess |
op_doi |
https://doi.org/10.1017/S0954102007000867 |
container_title |
Antarctic Science |
container_volume |
20 |
container_issue |
2 |
container_start_page |
149 |
op_container_end_page |
168 |
_version_ |
1770274837136146432 |