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

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, Diego Alejandro, Fernandez, Diana Elizabeth, Palma, Ricardo Manuel
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:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05677920_v55_n2_p277_Kietzmann 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

id	paper:paper_05677920_v55_n2_p277_Kietzmann
record_format	dspace
spelling	paper:paper_05677920_v55_n2_p277_Kietzmann2023-06-08T15:42:39Z Crustacean microcoprolites from the Upper Jurassic-lower cretaceous of the Neuqun Basin, Argentina: Systematics and biostratigraphic implications Kietzmann, Diego Alejandro Fernandez, Diana Elizabeth Palma, Ricardo Manuel 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 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05677920_v55_n2_p277_Kietzmann 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)
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, Diego Alejandro Fernandez, Diana Elizabeth Palma, Ricardo Manuel 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.
author	Kietzmann, Diego Alejandro Fernandez, Diana Elizabeth Palma, Ricardo Manuel
author_facet	Kietzmann, Diego Alejandro Fernandez, Diana Elizabeth Palma, Ricardo Manuel
author_sort	Kietzmann, Diego Alejandro
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	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05677920_v55_n2_p277_Kietzmann http://hdl.handle.net/20.500.12110/paper_05677920_v55_n2_p277_Kietzmann
work_keys_str_mv	AT kietzmanndiegoalejandro crustaceanmicrocoprolitesfromtheupperjurassiclowercretaceousoftheneuqunbasinargentinasystematicsandbiostratigraphicimplications AT fernandezdianaelizabeth crustaceanmicrocoprolitesfromtheupperjurassiclowercretaceousoftheneuqunbasinargentinasystematicsandbiostratigraphicimplications AT palmaricardomanuel crustaceanmicrocoprolitesfromtheupperjurassiclowercretaceousoftheneuqunbasinargentinasystematicsandbiostratigraphicimplications
_version_	1768544414794252288

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

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