Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)

Detalhes bibliográficos
Autor(a) principal: Antunes, M. Telles
Data de Publicação: 2010
Outros Autores: Balbino, A. C.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10362/4737
Resumo: This paper deals with Lamniform teeth collected in deposits from the Esbarrondadoiro Formation, Alvalade Basin in Southern Portugal. The following genera were recognized: Carcharias, Pseudocarcharias, Alopias, Isurus and Carcharocles. The species Carcharias acutissima is by far the most predominant, all other taxa being rare or very rare. This situation points to neritic, tropical to subtropical, rather shallow waters not far away from the coast. This is corroborated by the rarity of the associated, mainly pelagic, taxa. The ratio between C. acutissima and the remaining Lamniforms as a whole is markedly uneven between Esbarrondadoiro and the localities of Santa Margarida and Vale de Zebro. This suggests quite different environmental conditions, a matter that will require a more thorough examination taking into account all palaeontologic and geologic data.
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spelling Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)SelachiansLamniformsAlvalade BasinUppermost MiocenePaleoecologyThis paper deals with Lamniform teeth collected in deposits from the Esbarrondadoiro Formation, Alvalade Basin in Southern Portugal. The following genera were recognized: Carcharias, Pseudocarcharias, Alopias, Isurus and Carcharocles. The species Carcharias acutissima is by far the most predominant, all other taxa being rare or very rare. This situation points to neritic, tropical to subtropical, rather shallow waters not far away from the coast. This is corroborated by the rarity of the associated, mainly pelagic, taxa. The ratio between C. acutissima and the remaining Lamniforms as a whole is markedly uneven between Esbarrondadoiro and the localities of Santa Margarida and Vale de Zebro. This suggests quite different environmental conditions, a matter that will require a more thorough examination taking into account all palaeontologic and geologic data.RUNAntunes, M. TellesBalbino, A. C.2010-12-30T16:04:54Z2010-12-302010-12-30T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10362/4737enginfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-03-11T03:34:42Zoai:run.unl.pt:10362/4737Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T03:15:51.383465Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)
title Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)
spellingShingle Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)
Antunes, M. Telles
Selachians
Lamniforms
Alvalade Basin
Uppermost Miocene
Paleoecology
title_short Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)
title_full Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)
title_fullStr Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)
title_full_unstemmed Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)
title_sort Uppermost Miocene Lamniform Selachians (Pisces) from the Alvalade basin (Portugal)
author Antunes, M. Telles
author_facet Antunes, M. Telles
Balbino, A. C.
author_role author
author2 Balbino, A. C.
author2_role author
dc.contributor.none.fl_str_mv RUN
dc.contributor.author.fl_str_mv Antunes, M. Telles
Balbino, A. C.
dc.subject.por.fl_str_mv Selachians
Lamniforms
Alvalade Basin
Uppermost Miocene
Paleoecology
topic Selachians
Lamniforms
Alvalade Basin
Uppermost Miocene
Paleoecology
description This paper deals with Lamniform teeth collected in deposits from the Esbarrondadoiro Formation, Alvalade Basin in Southern Portugal. The following genera were recognized: Carcharias, Pseudocarcharias, Alopias, Isurus and Carcharocles. The species Carcharias acutissima is by far the most predominant, all other taxa being rare or very rare. This situation points to neritic, tropical to subtropical, rather shallow waters not far away from the coast. This is corroborated by the rarity of the associated, mainly pelagic, taxa. The ratio between C. acutissima and the remaining Lamniforms as a whole is markedly uneven between Esbarrondadoiro and the localities of Santa Margarida and Vale de Zebro. This suggests quite different environmental conditions, a matter that will require a more thorough examination taking into account all palaeontologic and geologic data.
publishDate 2010
dc.date.none.fl_str_mv 2010-12-30T16:04:54Z
2010-12-30
2010-12-30T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
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status_str publishedVersion
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url http://hdl.handle.net/10362/4737
dc.language.iso.fl_str_mv eng
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instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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