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
- Institución
- Universidad Nacional de Río Negro
- OAI Identificador
- oai:rid.unrn.edu.ar:20.500.12049/9513
Ver los metadatos del registro completo
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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 |
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http://rid.unrn.edu.ar/handle/20.500.12049/9513 |
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http://rid.unrn.edu.ar/handle/20.500.12049/9513 |
dc.language.none.fl_str_mv |
eng |
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eng |
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3rd Palaeontological Virtual Congress |
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openAccess |
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Universidad Nacional de Río Negro |
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RID-UNRN (UNRN) - Universidad Nacional de Río Negro |
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rid@unrn.edu.ar |
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