Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications

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As a result of a microfacial study in the outer and middle ramp deposits of the Vaca Muerta Formation (lower Tithonian-upper Valanginian), four ichnotaxa of crustacean microcoprolites are described: Palaxius azulensis Kietzmann isp. nov., Palaxius caracuraensis Kietzmann isp. nov., Helicerina? isp....

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Detalles Bibliográficos
Autores principales:	Kietzmann, D.A., Blau, J., Fernández, D.E., Palma, R.M.
Formato:	Artículo publishedVersion
Lenguaje:	Inglés
Publicado:	2010
Materias:	Argentina Crustacean microcoprolites Helicerina Jurassic-Cretaceous Neuquén Basin Palaxius Vaca Muerta Formation biostratigraphy coprolite crustacean dominance fossil assemblage Jurassic-Cretaceous boundary new record taxonomy Neuquen Basin Callianassidae Crustacea Erymidae Mecochiridae Nephropidae
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_05677920_v55_n2_p277_Kietzmann
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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spelling	paperaa:paper_05677920_v55_n2_p277_Kietzmann2023-06-12T16:48:04Z Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications Acta Palaeontol. Pol. 2010;55(2):277-284 Kietzmann, D.A. Blau, J. Fernández, D.E. Palma, R.M. Argentina Crustacean microcoprolites Helicerina Jurassic-Cretaceous Neuquén Basin Palaxius Vaca Muerta Formation biostratigraphy coprolite crustacean dominance fossil assemblage Jurassic-Cretaceous boundary new record taxonomy Argentina Neuquen Basin Callianassidae Crustacea Erymidae Mecochiridae Nephropidae As a result of a microfacial study in the outer and middle ramp deposits of the Vaca Muerta Formation (lower Tithonian-upper Valanginian), four ichnotaxa of crustacean microcoprolites are described: Palaxius azulensis Kietzmann isp. nov., Palaxius caracuraensis Kietzmann isp. nov., Helicerina? isp. A. aff. Helicerina siciliana and Helicerina isp. B. They represent one of the first records of crustacean microcoprolites for the Neuqun Basin and Argentina. Helicerina is reported for the first time from the Upper Jurassic and Lower Cretaceous of South America. It is inferred that Palaxius ichnospecies were produced by callianassids, while Helicerina ichnospecies could be produced by decapods of Mecochiridae, Erymidae, and/or Nephropidae affinity. Two assemblages of crustacean microcoprolites are recognised, a middle Tithonian to lower Berriasian Palaxius-dominated assemblage and an early to late Valanginian Helicerina-dominated assemblage. Fil:Kietzmann, D.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Fernández, D.E. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Palma, R.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2010 info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion application/pdf eng info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_05677920_v55_n2_p277_Kietzmann
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language	Inglés
orig_language_str_mv	eng
topic	Argentina Crustacean microcoprolites Helicerina Jurassic-Cretaceous Neuquén Basin Palaxius Vaca Muerta Formation biostratigraphy coprolite crustacean dominance fossil assemblage Jurassic-Cretaceous boundary new record taxonomy Argentina Neuquen Basin Callianassidae Crustacea Erymidae Mecochiridae Nephropidae
spellingShingle	Argentina Crustacean microcoprolites Helicerina Jurassic-Cretaceous Neuquén Basin Palaxius Vaca Muerta Formation biostratigraphy coprolite crustacean dominance fossil assemblage Jurassic-Cretaceous boundary new record taxonomy Argentina Neuquen Basin Callianassidae Crustacea Erymidae Mecochiridae Nephropidae Kietzmann, D.A. Blau, J. Fernández, D.E. Palma, R.M. Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications
topic_facet	Argentina Crustacean microcoprolites Helicerina Jurassic-Cretaceous Neuquén Basin Palaxius Vaca Muerta Formation biostratigraphy coprolite crustacean dominance fossil assemblage Jurassic-Cretaceous boundary new record taxonomy Argentina Neuquen Basin Callianassidae Crustacea Erymidae Mecochiridae Nephropidae
description	As a result of a microfacial study in the outer and middle ramp deposits of the Vaca Muerta Formation (lower Tithonian-upper Valanginian), four ichnotaxa of crustacean microcoprolites are described: Palaxius azulensis Kietzmann isp. nov., Palaxius caracuraensis Kietzmann isp. nov., Helicerina? isp. A. aff. Helicerina siciliana and Helicerina isp. B. They represent one of the first records of crustacean microcoprolites for the Neuqun Basin and Argentina. Helicerina is reported for the first time from the Upper Jurassic and Lower Cretaceous of South America. It is inferred that Palaxius ichnospecies were produced by callianassids, while Helicerina ichnospecies could be produced by decapods of Mecochiridae, Erymidae, and/or Nephropidae affinity. Two assemblages of crustacean microcoprolites are recognised, a middle Tithonian to lower Berriasian Palaxius-dominated assemblage and an early to late Valanginian Helicerina-dominated assemblage.
format	Artículo Artículo publishedVersion
author	Kietzmann, D.A. Blau, J. Fernández, D.E. Palma, R.M.
author_facet	Kietzmann, D.A. Blau, J. Fernández, D.E. Palma, R.M.
author_sort	Kietzmann, D.A.
title	Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications
title_short	Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications
title_full	Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications
title_fullStr	Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications
title_full_unstemmed	Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications
title_sort	crustacean microcoprolites from the upper jurassic-lower cretaceous of the neuqun basin, argentina: systematics and biostratigraphic implications
publishDate	2010
url	http://hdl.handle.net/20.500.12110/paper_05677920_v55_n2_p277_Kietzmann
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Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications

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