Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).

Autores
Caratelli, Martina; Citton, Paolo; Archuby, Fernando Miguel; Pignatti, Johannes
Año de publicación
2021
Idioma
inglés
Tipo de recurso
documento de conferencia
Estado
versión publicada
Descripción
Fil: Caratelli, Martina. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.
Fil: Citton, Paolo. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.
Fil: Archuby, Fernando Miguel. Universidad Nacional de La Plata. Centro de Estudios Integrales de La Dinámica Exógena (CEIDE). Buenos Aires; Argentina.
Fil: Pignatti, Johannes. Dipartimento di Scienze della Terra, Università di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185, Roma, Italy
Fish skeletal debris, composed of minute-sized teeth and dermal scales highly resistant to dissolution, occurs in marine and nonmarine palaeoenvironments, especially in the deep-sea. Although parataxonomically classi!ed and generally rare, ichthyoliths have been used to interpret abundance and diversity of !sh communities, and as biostratigraphic markers in otherwise barren, muddy sediments. Here we describe three teleost teeth from marly shales (Crioceratites schlagintweiti Zone) and calcareous shales (Crioceratites diamantensis and Paraspiticeras groeberi zones) of the Lower Cretaceous (Hauterivian) Agua de la Mula Member (Agrio Formation), which formed in a mixed siliciclastic-carbonate marine homoclinal ramp system, under low energy and dysoxic conditions. Specimens were picked from three washing residues (90 g total weight) that yield foraminiferal assemblages with low abundance and species richness. The specimens are between 0.5 and 1.5 mm long, triangular in outline, and have a smooth external surface with straight margins. Adopting the system of morphological descriptors for ichthyoliths, the specimen with "attened cusp and circular section in occlusal view can be referred to type a8/b1/c1/d1, while two teeth showing acute cusps and with sub-oval and acute laterally section can be referred to types a9/b1/c5/d2/e1/f1/g1/h0 and a9/b2/c5/d2/e4/f3/g1/h0, respectively. The new material enriches the poor vertebrate fossil record of the marine members of the Agrio Formation, to date composed of scattered remains of marine ‘reptiles’, pycnodontiform !shes, hybodont and lamniform sharks, and adds further faunal components exploiting di#erent, as yet unrecorded, niches.
Materia
Ciencias Exactas y Naturales
Fish teeth
Ichthyoliths
Agua de la Mula Member
Lower Cretaceous
Neuquén Basin
Ciencias Exactas y Naturales
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
RID-UNRN (UNRN)
Institución
Universidad Nacional de Río Negro
OAI Identificador
oai:rid.unrn.edu.ar:20.500.12049/9513

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repository_id_str 4369
network_name_str RID-UNRN (UNRN)
spelling Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).Caratelli, MartinaCitton, PaoloArchuby, Fernando MiguelPignatti, JohannesCiencias Exactas y NaturalesFish teethIchthyolithsAgua de la Mula MemberLower CretaceousNeuquén BasinCiencias Exactas y NaturalesFil: Caratelli, Martina. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.Fil: Citton, Paolo. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.Fil: Archuby, Fernando Miguel. Universidad Nacional de La Plata. Centro de Estudios Integrales de La Dinámica Exógena (CEIDE). Buenos Aires; Argentina.Fil: Pignatti, Johannes. Dipartimento di Scienze della Terra, Università di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185, Roma, ItalyFish skeletal debris, composed of minute-sized teeth and dermal scales highly resistant to dissolution, occurs in marine and nonmarine palaeoenvironments, especially in the deep-sea. Although parataxonomically classi!ed and generally rare, ichthyoliths have been used to interpret abundance and diversity of !sh communities, and as biostratigraphic markers in otherwise barren, muddy sediments. Here we describe three teleost teeth from marly shales (Crioceratites schlagintweiti Zone) and calcareous shales (Crioceratites diamantensis and Paraspiticeras groeberi zones) of the Lower Cretaceous (Hauterivian) Agua de la Mula Member (Agrio Formation), which formed in a mixed siliciclastic-carbonate marine homoclinal ramp system, under low energy and dysoxic conditions. Specimens were picked from three washing residues (90 g total weight) that yield foraminiferal assemblages with low abundance and species richness. The specimens are between 0.5 and 1.5 mm long, triangular in outline, and have a smooth external surface with straight margins. Adopting the system of morphological descriptors for ichthyoliths, the specimen with "attened cusp and circular section in occlusal view can be referred to type a8/b1/c1/d1, while two teeth showing acute cusps and with sub-oval and acute laterally section can be referred to types a9/b1/c5/d2/e1/f1/g1/h0 and a9/b2/c5/d2/e4/f3/g1/h0, respectively. The new material enriches the poor vertebrate fossil record of the marine members of the Agrio Formation, to date composed of scattered remains of marine ‘reptiles’, pycnodontiform !shes, hybodont and lamniform sharks, and adds further faunal components exploiting di#erent, as yet unrecorded, niches.2021info:eu-repo/semantics/conferenceObjectinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_5794info:ar-repo/semantics/documentoDeConferenciaapplication/pdfhttp://rid.unrn.edu.ar/handle/20.500.12049/9513eng3rd Palaeontological Virtual Congressinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/4.0/reponame:RID-UNRN (UNRN)instname:Universidad Nacional de Río Negro2025-09-29T14:29:24Zoai:rid.unrn.edu.ar:20.500.12049/9513instacron:UNRNInstitucionalhttps://rid.unrn.edu.ar/jspui/Universidad públicaNo correspondehttps://rid.unrn.edu.ar/oai/snrdrid@unrn.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:43692025-09-29 14:29:24.617RID-UNRN (UNRN) - Universidad Nacional de Río Negrofalse
dc.title.none.fl_str_mv Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).
title Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).
spellingShingle Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).
Caratelli, Martina
Ciencias Exactas y Naturales
Fish teeth
Ichthyoliths
Agua de la Mula Member
Lower Cretaceous
Neuquén Basin
Ciencias Exactas y Naturales
title_short Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).
title_full Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).
title_fullStr Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).
title_full_unstemmed Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).
title_sort Vertebrate micro-remains from the Lower Cretaceous Agrio Formation (Neuquén Basin, Argentina).
dc.creator.none.fl_str_mv Caratelli, Martina
Citton, Paolo
Archuby, Fernando Miguel
Pignatti, Johannes
author Caratelli, Martina
author_facet Caratelli, Martina
Citton, Paolo
Archuby, Fernando Miguel
Pignatti, Johannes
author_role author
author2 Citton, Paolo
Archuby, Fernando Miguel
Pignatti, Johannes
author2_role author
author
author
dc.subject.none.fl_str_mv Ciencias Exactas y Naturales
Fish teeth
Ichthyoliths
Agua de la Mula Member
Lower Cretaceous
Neuquén Basin
Ciencias Exactas y Naturales
topic Ciencias Exactas y Naturales
Fish teeth
Ichthyoliths
Agua de la Mula Member
Lower Cretaceous
Neuquén Basin
Ciencias Exactas y Naturales
dc.description.none.fl_txt_mv Fil: Caratelli, Martina. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.
Fil: Citton, Paolo. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.
Fil: Archuby, Fernando Miguel. Universidad Nacional de La Plata. Centro de Estudios Integrales de La Dinámica Exógena (CEIDE). Buenos Aires; Argentina.
Fil: Pignatti, Johannes. Dipartimento di Scienze della Terra, Università di Roma “La Sapienza”, Piazzale Aldo Moro 5, 00185, Roma, Italy
Fish skeletal debris, composed of minute-sized teeth and dermal scales highly resistant to dissolution, occurs in marine and nonmarine palaeoenvironments, especially in the deep-sea. Although parataxonomically classi!ed and generally rare, ichthyoliths have been used to interpret abundance and diversity of !sh communities, and as biostratigraphic markers in otherwise barren, muddy sediments. Here we describe three teleost teeth from marly shales (Crioceratites schlagintweiti Zone) and calcareous shales (Crioceratites diamantensis and Paraspiticeras groeberi zones) of the Lower Cretaceous (Hauterivian) Agua de la Mula Member (Agrio Formation), which formed in a mixed siliciclastic-carbonate marine homoclinal ramp system, under low energy and dysoxic conditions. Specimens were picked from three washing residues (90 g total weight) that yield foraminiferal assemblages with low abundance and species richness. The specimens are between 0.5 and 1.5 mm long, triangular in outline, and have a smooth external surface with straight margins. Adopting the system of morphological descriptors for ichthyoliths, the specimen with "attened cusp and circular section in occlusal view can be referred to type a8/b1/c1/d1, while two teeth showing acute cusps and with sub-oval and acute laterally section can be referred to types a9/b1/c5/d2/e1/f1/g1/h0 and a9/b2/c5/d2/e4/f3/g1/h0, respectively. The new material enriches the poor vertebrate fossil record of the marine members of the Agrio Formation, to date composed of scattered remains of marine ‘reptiles’, pycnodontiform !shes, hybodont and lamniform sharks, and adds further faunal components exploiting di#erent, as yet unrecorded, niches.
description Fil: Caratelli, Martina. Universidad Nacional de Río Negro, Instituto de Investigación en Paleobiología y Geología. Río Negro; Argentina.
publishDate 2021
dc.date.none.fl_str_mv 2021
dc.type.none.fl_str_mv info:eu-repo/semantics/conferenceObject
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_5794
info:ar-repo/semantics/documentoDeConferencia
format conferenceObject
status_str publishedVersion
dc.identifier.none.fl_str_mv http://rid.unrn.edu.ar/handle/20.500.12049/9513
url http://rid.unrn.edu.ar/handle/20.500.12049/9513
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 3rd Palaeontological Virtual Congress
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/4.0/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/4.0/
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instname:Universidad Nacional de Río Negro
reponame_str RID-UNRN (UNRN)
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instname_str Universidad Nacional de Río Negro
repository.name.fl_str_mv RID-UNRN (UNRN) - Universidad Nacional de Río Negro
repository.mail.fl_str_mv rid@unrn.edu.ar
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