Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis
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...
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Online Access: | http://hdl.handle.net/2434/271127 https://doi.org/10.1017/S0016756814000478 |
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ftunivmilanoair:oai:air.unimi.it:2434/271127 2024-02-11T10:08:01+01:00 Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis M.R. Petrizzo I. Premoli Silva M. Caron M.R. Petrizzo M. Caron I. Premoli Silva 2015-05 http://hdl.handle.net/2434/271127 https://doi.org/10.1017/S0016756814000478 eng eng Cambridge University Press info:eu-repo/semantics/altIdentifier/wos/WOS:000356054000009 volume:152 issue:3 firstpage:521 lastpage:536 numberofpages:16 journal:GEOLOGICAL MAGAZINE http://hdl.handle.net/2434/271127 doi:10.1017/S0016756814000478 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927690945 biostratigraphy Blake Nose Plateau (ODP 171B NW Atlantic Ocean) Cenomanian Stage Global Boundary Stratotype Section and Point Mont Risou (Haute-Alpes France) planktonic foraminifera taxonomy Settore GEO/01 - Paleontologia e Paleoecologia info:eu-repo/semantics/article 2015 ftunivmilanoair https://doi.org/10.1017/S0016756814000478 2024-01-23T23:30:03Z 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 The University of Milan: Archivio Istituzionale della Ricerca (AIR) Geological Magazine 152 3 521 536 |
institution |
Open Polar |
collection |
The University of Milan: Archivio Istituzionale della Ricerca (AIR) |
op_collection_id |
ftunivmilanoair |
language |
English |
topic |
biostratigraphy Blake Nose Plateau (ODP 171B NW Atlantic Ocean) Cenomanian Stage Global Boundary Stratotype Section and Point Mont Risou (Haute-Alpes France) planktonic foraminifera taxonomy Settore GEO/01 - Paleontologia e Paleoecologia |
spellingShingle |
biostratigraphy Blake Nose Plateau (ODP 171B NW Atlantic Ocean) Cenomanian Stage Global Boundary Stratotype Section and Point Mont Risou (Haute-Alpes France) planktonic foraminifera taxonomy Settore GEO/01 - Paleontologia e Paleoecologia M.R. Petrizzo I. Premoli Silva M. Caron Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis |
topic_facet |
biostratigraphy Blake Nose Plateau (ODP 171B NW Atlantic Ocean) Cenomanian Stage Global Boundary Stratotype Section and Point Mont Risou (Haute-Alpes France) planktonic foraminifera taxonomy Settore GEO/01 - Paleontologia e Paleoecologia |
description |
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. |
author2 |
M.R. Petrizzo M. Caron I. Premoli Silva |
format |
Article in Journal/Newspaper |
author |
M.R. Petrizzo I. Premoli Silva M. Caron |
author_facet |
M.R. Petrizzo I. Premoli Silva M. Caron |
author_sort |
M.R. Petrizzo |
title |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis |
title_short |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis |
title_full |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis |
title_fullStr |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis |
title_full_unstemmed |
Remarks on the identification of the Albian/Cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis |
title_sort |
remarks on the identification of the albian/cenomanian boundary and taxonomic clarification of the planktonic foraminifera index species globotruncanoides, brotzeni and tehamaensis |
publisher |
Cambridge University Press |
publishDate |
2015 |
url |
http://hdl.handle.net/2434/271127 https://doi.org/10.1017/S0016756814000478 |
genre |
Planktonic foraminifera |
genre_facet |
Planktonic foraminifera |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000356054000009 volume:152 issue:3 firstpage:521 lastpage:536 numberofpages:16 journal:GEOLOGICAL MAGAZINE http://hdl.handle.net/2434/271127 doi:10.1017/S0016756814000478 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84927690945 |
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 |
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1790606930009391104 |