New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)

Several tens of Lower Bathonian Bigotites from Digne-Castellane region (SE France) and Cabo Mondego area (Portugal) have been reviewed. Three species have been distinguished in the lowermost subzone of the Zigzag Zone (Parvum Subzone) just above the boundary Bajocian to Bathonian: B. diniensis Stura...

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Detalles Bibliográficos
Autor: Fernández López, Sixto Rafael
Tipo de recurso: artículo
Fecha de publicación:2007
País:España
Institución:Universidad Complutense de Madrid (UCM)
Repositorio:Docta Complutense
Idioma:inglés
OAI Identifier:oai:docta.ucm.es:20.500.14352/50868
Acceso en línea:https://hdl.handle.net/20.500.14352/50868
Access Level:acceso abierto
Palabra clave:564.53(469)
Ammonites
Systematic palaeontology
Alpine Basin
Digne
Bas Auran
Lusitanian Basin
Cabo Mondego
Western Tethys
Paleontología
2416 Paleontología
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oai_identifier_str oai:docta.ucm.es:20.500.14352/50868
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spelling New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)Fernández López, Sixto Rafael564.53(469)AmmonitesSystematic palaeontologyAlpine BasinDigneBas AuranLusitanian BasinCabo MondegoWestern TethysPaleontología2416 PaleontologíaSeveral tens of Lower Bathonian Bigotites from Digne-Castellane region (SE France) and Cabo Mondego area (Portugal) have been reviewed. Three species have been distinguished in the lowermost subzone of the Zigzag Zone (Parvum Subzone) just above the boundary Bajocian to Bathonian: B. diniensis Sturani [M+m], B. sturanii sp. nov. [M+m] and B. mondegoensis sp. nov. [M+m]. In the Bas Auran area, a chronocline from evolute, strongly ribbed and constricted forms (including B. sturanii and B. diniensis) to involute forms with blunt, moderately prominent ribbing and weak constrictions (including B. mondegoensis) can be recognized. The shared taxa B. mondegoensis sp. nov. and possibly B. diniensis Sturani permit detailed subdivision and correlation to be established between ammonite fossil assemblages of Parvum Subzone in the Lusitanian and Alpine basins. A separate genus of Zigzagiceratinae, Protozigzagiceras g. nov., is proposed to encompass P. torrensi (Sturani) as type species. These new palaeontological data about the youngest members of Bigotitinae and the oldest members of Zigzagiceratinae are of biochronostratigraphic importance for the subdivision and correlation of the basal Bathonian Zigzag Zone. Three successive biohorizons can be identified at the Parvum Subzone in Bas Auran (French Alpine Basin) and Cabo Mondego (Lusitanian Basin): Diniensis, Mondegoensis and Protozigzagiceras biohorizons.Università degli studi di Milano. Dipartimento di Scienze della Terra "A. Desio"Universidad Complutense de Madrid20072007-12-0120072007-12-01journal articlehttp://purl.org/coar/resource_type/c_6501info:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/20.500.14352/50868reponame:Docta Complutenseinstname:Universidad Complutense de Madrid (UCM)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:docta.ucm.es:20.500.14352/508682026-06-02T12:44:21Z
dc.title.none.fl_str_mv New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)
title New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)
spellingShingle New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)
Fernández López, Sixto Rafael
564.53(469)
Ammonites
Systematic palaeontology
Alpine Basin
Digne
Bas Auran
Lusitanian Basin
Cabo Mondego
Western Tethys
Paleontología
2416 Paleontología
title_short New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)
title_full New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)
title_fullStr New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)
title_full_unstemmed New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)
title_sort New Early Bathonian Bigotitinae and Zigzagiceratinae (Ammonoidea,Middle Jurassic)
dc.creator.none.fl_str_mv Fernández López, Sixto Rafael
author Fernández López, Sixto Rafael
author_facet Fernández López, Sixto Rafael
author_role author
dc.contributor.none.fl_str_mv Universidad Complutense de Madrid
dc.subject.none.fl_str_mv 564.53(469)
Ammonites
Systematic palaeontology
Alpine Basin
Digne
Bas Auran
Lusitanian Basin
Cabo Mondego
Western Tethys
Paleontología
2416 Paleontología
topic 564.53(469)
Ammonites
Systematic palaeontology
Alpine Basin
Digne
Bas Auran
Lusitanian Basin
Cabo Mondego
Western Tethys
Paleontología
2416 Paleontología
description Several tens of Lower Bathonian Bigotites from Digne-Castellane region (SE France) and Cabo Mondego area (Portugal) have been reviewed. Three species have been distinguished in the lowermost subzone of the Zigzag Zone (Parvum Subzone) just above the boundary Bajocian to Bathonian: B. diniensis Sturani [M+m], B. sturanii sp. nov. [M+m] and B. mondegoensis sp. nov. [M+m]. In the Bas Auran area, a chronocline from evolute, strongly ribbed and constricted forms (including B. sturanii and B. diniensis) to involute forms with blunt, moderately prominent ribbing and weak constrictions (including B. mondegoensis) can be recognized. The shared taxa B. mondegoensis sp. nov. and possibly B. diniensis Sturani permit detailed subdivision and correlation to be established between ammonite fossil assemblages of Parvum Subzone in the Lusitanian and Alpine basins. A separate genus of Zigzagiceratinae, Protozigzagiceras g. nov., is proposed to encompass P. torrensi (Sturani) as type species. These new palaeontological data about the youngest members of Bigotitinae and the oldest members of Zigzagiceratinae are of biochronostratigraphic importance for the subdivision and correlation of the basal Bathonian Zigzag Zone. Three successive biohorizons can be identified at the Parvum Subzone in Bas Auran (French Alpine Basin) and Cabo Mondego (Lusitanian Basin): Diniensis, Mondegoensis and Protozigzagiceras biohorizons.
publishDate 2007
dc.date.none.fl_str_mv 2007
2007-12-01
2007
2007-12-01
dc.type.none.fl_str_mv journal article
http://purl.org/coar/resource_type/c_6501
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv https://hdl.handle.net/20.500.14352/50868
url https://hdl.handle.net/20.500.14352/50868
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Università degli studi di Milano. Dipartimento di Scienze della Terra "A. Desio"
publisher.none.fl_str_mv Università degli studi di Milano. Dipartimento di Scienze della Terra "A. Desio"
dc.source.none.fl_str_mv reponame:Docta Complutense
instname:Universidad Complutense de Madrid (UCM)
instname_str Universidad Complutense de Madrid (UCM)
reponame_str Docta Complutense
collection Docta Complutense
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,301603

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