Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis
Abstract The planktonic foraminifera assemblage across the Global Boundary Stratotype Section and Point (GSSP) for the base of the Cenomanian Stage defined at Mont Risou (Haute-Alpes in France) is here restudied to clarify the identification and stratigraphic distribution of Thalmanninella globotrun...
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Language: | English |
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Cambridge University Press (CUP)
2014
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Online Access: | http://dx.doi.org/10.1017/s0016756814000478 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756814000478 |
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crcambridgeupr:10.1017/s0016756814000478 2024-09-15T18:30:51+00:00 Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis PETRIZZO, MARIA ROSE CARON, MICHÈLE PREMOLI SILVA, ISABELLA 2014 http://dx.doi.org/10.1017/s0016756814000478 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756814000478 en eng Cambridge University Press (CUP) https://www.cambridge.org/core/terms Geological Magazine volume 152, issue 3, page 521-536 ISSN 0016-7568 1469-5081 journal-article 2014 crcambridgeupr https://doi.org/10.1017/s0016756814000478 2024-08-21T04:01:44Z Abstract The planktonic foraminifera assemblage across the Global Boundary Stratotype Section and Point (GSSP) for the base of the Cenomanian Stage defined at Mont Risou (Haute-Alpes in France) is here restudied to clarify the identification and stratigraphic distribution of Thalmanninella globotruncanoides ( = Rotalipora globotruncanoides Sigal, 1948) and Pseudothalmanninella tehamaensis ( = Rotalipora tehamaensis Marianos & Zingula, 1966) whose appearance levels are primary and secondary criteria for placing the Albian/Cenomanian boundary. Since the ratification of the GSSP in 2002, the identification of the foraminifera index species across the Albian/Cenomanian boundary has been reported to be sometimes difficult either because of their rarity or uncertainty in the taxonomic identifications. We discuss the taxonomic status of Thalmanninella brotzeni Sigal 1948, a species regarded for a long time to be a junior synonym of Th. globotruncanoides , through images of Sigal's type materials deposited at the Musée National d’Histoire Naturelle (Paris), and elucidate the taxonomically important characters that enable unequivocal identification of Th. brotzeni, Th. globotruncanoides and Ps. tehamaensis . Planktonic foraminifera marker species from Mont Risou are compared with well-preserved specimens from Blake Nose Plateau (ODP 171B, North Western Atlantic Ocean) to verify the reliability and stratigraphic distribution of these marker taxa outside the Mediterranean Tethyan area. Article in Journal/Newspaper Planktonic foraminifera Cambridge University Press Geological Magazine 152 3 521 536 |
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Cambridge University Press |
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English |
description |
Abstract The planktonic foraminifera assemblage across the Global Boundary Stratotype Section and Point (GSSP) for the base of the Cenomanian Stage defined at Mont Risou (Haute-Alpes in France) is here restudied to clarify the identification and stratigraphic distribution of Thalmanninella globotruncanoides ( = Rotalipora globotruncanoides Sigal, 1948) and Pseudothalmanninella tehamaensis ( = Rotalipora tehamaensis Marianos & Zingula, 1966) whose appearance levels are primary and secondary criteria for placing the Albian/Cenomanian boundary. Since the ratification of the GSSP in 2002, the identification of the foraminifera index species across the Albian/Cenomanian boundary has been reported to be sometimes difficult either because of their rarity or uncertainty in the taxonomic identifications. We discuss the taxonomic status of Thalmanninella brotzeni Sigal 1948, a species regarded for a long time to be a junior synonym of Th. globotruncanoides , through images of Sigal's type materials deposited at the Musée National d’Histoire Naturelle (Paris), and elucidate the taxonomically important characters that enable unequivocal identification of Th. brotzeni, Th. globotruncanoides and Ps. tehamaensis . Planktonic foraminifera marker species from Mont Risou are compared with well-preserved specimens from Blake Nose Plateau (ODP 171B, North Western Atlantic Ocean) to verify the reliability and stratigraphic distribution of these marker taxa outside the Mediterranean Tethyan area. |
format |
Article in Journal/Newspaper |
author |
PETRIZZO, MARIA ROSE CARON, MICHÈLE PREMOLI SILVA, ISABELLA |
spellingShingle |
PETRIZZO, MARIA ROSE CARON, MICHÈLE PREMOLI SILVA, ISABELLA Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis |
author_facet |
PETRIZZO, MARIA ROSE CARON, MICHÈLE PREMOLI SILVA, ISABELLA |
author_sort |
PETRIZZO, MARIA ROSE |
title |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis |
title_short |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis |
title_full |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis |
title_fullStr |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis |
title_full_unstemmed |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis |
title_sort |
remarks on the identification of the albian/cenomanian boundary and taxonomic clarification of the planktonic foraminifera index speciesglobotruncanoides, brotzeniandtehamaensis |
publisher |
Cambridge University Press (CUP) |
publishDate |
2014 |
url |
http://dx.doi.org/10.1017/s0016756814000478 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0016756814000478 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_source |
Geological Magazine volume 152, issue 3, page 521-536 ISSN 0016-7568 1469-5081 |
op_rights |
https://www.cambridge.org/core/terms |
op_doi |
https://doi.org/10.1017/s0016756814000478 |
container_title |
Geological Magazine |
container_volume |
152 |
container_issue |
3 |
container_start_page |
521 |
op_container_end_page |
536 |
_version_ |
1810472372402126848 |