Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina

Autores
Echevarría, Javier; Hodges, Montana S.; Damborenea, Susana Ester; Stanley Jr., George D.; Manceñido, Miguel Oscar
Año de publicación
2017
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
After a diversity peak during the Late Triassic, corals were severely affected by the end-Triassic extinction. The study of their recovery is fundamental for a better understanding of the ecological rearrangement undergone by Early Jurassic marine invertebrate faunas. In this contribution we analyze the morphologic recovery shown by scleractinians in southern Mendoza Province, which is the only place in the Neuquén Basin with marine outcrops spanning the Triassic/Jurassic boundary. A two-stage recovery pattern was recognized. During the first stage (Hettangian–Sinemurian) only solitary corals, most of them discoidal, could be found. After a hiatus encompassing the latest Early Sinemurian and the Late Sinemurian, the second stage (Pliensbachian) developed. A sharp increase in morphological diversity of solitary corals is then recorded, with discoidal, cupolate, patellate, turbinate, trochoid/turbinate, trochoid/ceratoid and maybe cylindrical morphologies. Additionally, colonial forms with low degree of corallite integration (phaceloid and cerioid colonies) appeared in the basin. The diversification trend hereby described provides useful insight regarding the scleractinian recovery after the end-Triassic mass extinction event within southern basins of South America. Furthermore, this recovery pattern is comparable with the one recognized for other regions (Chile, western North America, central Asia) yet it differs from that observed in some European basins. The trend outlined herein for Early Jurassic corals from the Neuquén Basin may reflect a large-scale phenomenon and/or the action of local adverse conditions (such as fluvial influence), which is open to further testing.
Después de un máximo de diversidad durante el Triásico Tardío, los corales se vieron severamente afectados por la extinción del final del Triásico. El estudio de su recuperación resulta fundamental para una adecuada comprensión del reacomodamiento ecológico de las faunas de invertebrados marinos del Jurásico Temprano. Se analiza aquí la recuperación morfológica experimentada por los escleractinios en el sur de la Provincia de Mendoza, único lugar en la Cuenca Neuquina con afloramientos marinos del pasaje Triásico–Jurásico. Se reconoce un patrón de recuperación de dos fases. Durante la primera fase (Hetangiano–Sinemuriano) sólo se registran corales solitarios, en su mayoría discoidales. Después de un hiato que abarcó la última parte del Sinemuriano Temprano y todo el Sinemuriano Tardío se desarrolló la segunda fase (Pliensbachiano). Se registra entonces un incremento marcado en la diversidad morfológica de los corales solitarios, con formas discoidales, cupulares, pateladas, turbinadas, trocoides/turbinadas, trocoides/ceratoides y posiblemente cilíndricas. Además, aparecen en la cuenca formas coloniales con bajo grado de integración de sus coralitos (faceloides y cerioides). La diversificación reconocida aporta información útil acerca de la recuperación de los escleractinios tras la extinción masiva de finales del Triásico en cuencas australes de Sudamérica. Este patrón de recuperación es comparable al de otras regiones (Chile, oeste de Norteamérica, Asia central) aunque difiere del hallado en algunas cuencas europeas. La tendencia aquí esbozada para los corales del Jurásico Temprano de la Cuenca Neuquina podría estar reflejando un fenómeno de gran escala y/o condiciones locales adversas (como influencia fluvial), lo cual plantea la posibilidad de futuros estudios.
Facultad de Ciencias Naturales y Museo
Materia
Ciencias Naturales
Scleractinia
Early Jurassic
Neuquén Basin
Diversity recovery
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-sa/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/146958

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network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, ArgentinaRecuperación de la diversidad morfológica de los escleractinios durante el Jurásico temprano en la provincia de Mendoza, ArgentinaEchevarría, JavierHodges, Montana S.Damborenea, Susana EsterStanley Jr., George D.Manceñido, Miguel OscarCiencias NaturalesScleractiniaEarly JurassicNeuquén BasinDiversity recoveryAfter a diversity peak during the Late Triassic, corals were severely affected by the end-Triassic extinction. The study of their recovery is fundamental for a better understanding of the ecological rearrangement undergone by Early Jurassic marine invertebrate faunas. In this contribution we analyze the morphologic recovery shown by scleractinians in southern Mendoza Province, which is the only place in the Neuquén Basin with marine outcrops spanning the Triassic/Jurassic boundary. A two-stage recovery pattern was recognized. During the first stage (Hettangian–Sinemurian) only solitary corals, most of them discoidal, could be found. After a hiatus encompassing the latest Early Sinemurian and the Late Sinemurian, the second stage (Pliensbachian) developed. A sharp increase in morphological diversity of solitary corals is then recorded, with discoidal, cupolate, patellate, turbinate, trochoid/turbinate, trochoid/ceratoid and maybe cylindrical morphologies. Additionally, colonial forms with low degree of corallite integration (phaceloid and cerioid colonies) appeared in the basin. The diversification trend hereby described provides useful insight regarding the scleractinian recovery after the end-Triassic mass extinction event within southern basins of South America. Furthermore, this recovery pattern is comparable with the one recognized for other regions (Chile, western North America, central Asia) yet it differs from that observed in some European basins. The trend outlined herein for Early Jurassic corals from the Neuquén Basin may reflect a large-scale phenomenon and/or the action of local adverse conditions (such as fluvial influence), which is open to further testing.Después de un máximo de diversidad durante el Triásico Tardío, los corales se vieron severamente afectados por la extinción del final del Triásico. El estudio de su recuperación resulta fundamental para una adecuada comprensión del reacomodamiento ecológico de las faunas de invertebrados marinos del Jurásico Temprano. Se analiza aquí la recuperación morfológica experimentada por los escleractinios en el sur de la Provincia de Mendoza, único lugar en la Cuenca Neuquina con afloramientos marinos del pasaje Triásico–Jurásico. Se reconoce un patrón de recuperación de dos fases. Durante la primera fase (Hetangiano–Sinemuriano) sólo se registran corales solitarios, en su mayoría discoidales. Después de un hiato que abarcó la última parte del Sinemuriano Temprano y todo el Sinemuriano Tardío se desarrolló la segunda fase (Pliensbachiano). Se registra entonces un incremento marcado en la diversidad morfológica de los corales solitarios, con formas discoidales, cupulares, pateladas, turbinadas, trocoides/turbinadas, trocoides/ceratoides y posiblemente cilíndricas. Además, aparecen en la cuenca formas coloniales con bajo grado de integración de sus coralitos (faceloides y cerioides). La diversificación reconocida aporta información útil acerca de la recuperación de los escleractinios tras la extinción masiva de finales del Triásico en cuencas australes de Sudamérica. Este patrón de recuperación es comparable al de otras regiones (Chile, oeste de Norteamérica, Asia central) aunque difiere del hallado en algunas cuencas europeas. La tendencia aquí esbozada para los corales del Jurásico Temprano de la Cuenca Neuquina podría estar reflejando un fenómeno de gran escala y/o condiciones locales adversas (como influencia fluvial), lo cual plantea la posibilidad de futuros estudios.Facultad de Ciencias Naturales y Museo2017info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf70-82http://sedici.unlp.edu.ar/handle/10915/146958enginfo:eu-repo/semantics/altIdentifier/issn/0002-7014info:eu-repo/semantics/altIdentifier/doi/10.5710/AMGH.11.09.2016.2997info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:37:32Zoai:sedici.unlp.edu.ar:10915/146958Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:37:32.594SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
Recuperación de la diversidad morfológica de los escleractinios durante el Jurásico temprano en la provincia de Mendoza, Argentina
title Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
spellingShingle Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
Echevarría, Javier
Ciencias Naturales
Scleractinia
Early Jurassic
Neuquén Basin
Diversity recovery
title_short Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
title_full Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
title_fullStr Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
title_full_unstemmed Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
title_sort Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
dc.creator.none.fl_str_mv Echevarría, Javier
Hodges, Montana S.
Damborenea, Susana Ester
Stanley Jr., George D.
Manceñido, Miguel Oscar
author Echevarría, Javier
author_facet Echevarría, Javier
Hodges, Montana S.
Damborenea, Susana Ester
Stanley Jr., George D.
Manceñido, Miguel Oscar
author_role author
author2 Hodges, Montana S.
Damborenea, Susana Ester
Stanley Jr., George D.
Manceñido, Miguel Oscar
author2_role author
author
author
author
dc.subject.none.fl_str_mv Ciencias Naturales
Scleractinia
Early Jurassic
Neuquén Basin
Diversity recovery
topic Ciencias Naturales
Scleractinia
Early Jurassic
Neuquén Basin
Diversity recovery
dc.description.none.fl_txt_mv After a diversity peak during the Late Triassic, corals were severely affected by the end-Triassic extinction. The study of their recovery is fundamental for a better understanding of the ecological rearrangement undergone by Early Jurassic marine invertebrate faunas. In this contribution we analyze the morphologic recovery shown by scleractinians in southern Mendoza Province, which is the only place in the Neuquén Basin with marine outcrops spanning the Triassic/Jurassic boundary. A two-stage recovery pattern was recognized. During the first stage (Hettangian–Sinemurian) only solitary corals, most of them discoidal, could be found. After a hiatus encompassing the latest Early Sinemurian and the Late Sinemurian, the second stage (Pliensbachian) developed. A sharp increase in morphological diversity of solitary corals is then recorded, with discoidal, cupolate, patellate, turbinate, trochoid/turbinate, trochoid/ceratoid and maybe cylindrical morphologies. Additionally, colonial forms with low degree of corallite integration (phaceloid and cerioid colonies) appeared in the basin. The diversification trend hereby described provides useful insight regarding the scleractinian recovery after the end-Triassic mass extinction event within southern basins of South America. Furthermore, this recovery pattern is comparable with the one recognized for other regions (Chile, western North America, central Asia) yet it differs from that observed in some European basins. The trend outlined herein for Early Jurassic corals from the Neuquén Basin may reflect a large-scale phenomenon and/or the action of local adverse conditions (such as fluvial influence), which is open to further testing.
Después de un máximo de diversidad durante el Triásico Tardío, los corales se vieron severamente afectados por la extinción del final del Triásico. El estudio de su recuperación resulta fundamental para una adecuada comprensión del reacomodamiento ecológico de las faunas de invertebrados marinos del Jurásico Temprano. Se analiza aquí la recuperación morfológica experimentada por los escleractinios en el sur de la Provincia de Mendoza, único lugar en la Cuenca Neuquina con afloramientos marinos del pasaje Triásico–Jurásico. Se reconoce un patrón de recuperación de dos fases. Durante la primera fase (Hetangiano–Sinemuriano) sólo se registran corales solitarios, en su mayoría discoidales. Después de un hiato que abarcó la última parte del Sinemuriano Temprano y todo el Sinemuriano Tardío se desarrolló la segunda fase (Pliensbachiano). Se registra entonces un incremento marcado en la diversidad morfológica de los corales solitarios, con formas discoidales, cupulares, pateladas, turbinadas, trocoides/turbinadas, trocoides/ceratoides y posiblemente cilíndricas. Además, aparecen en la cuenca formas coloniales con bajo grado de integración de sus coralitos (faceloides y cerioides). La diversificación reconocida aporta información útil acerca de la recuperación de los escleractinios tras la extinción masiva de finales del Triásico en cuencas australes de Sudamérica. Este patrón de recuperación es comparable al de otras regiones (Chile, oeste de Norteamérica, Asia central) aunque difiere del hallado en algunas cuencas europeas. La tendencia aquí esbozada para los corales del Jurásico Temprano de la Cuenca Neuquina podría estar reflejando un fenómeno de gran escala y/o condiciones locales adversas (como influencia fluvial), lo cual plantea la posibilidad de futuros estudios.
Facultad de Ciencias Naturales y Museo
description After a diversity peak during the Late Triassic, corals were severely affected by the end-Triassic extinction. The study of their recovery is fundamental for a better understanding of the ecological rearrangement undergone by Early Jurassic marine invertebrate faunas. In this contribution we analyze the morphologic recovery shown by scleractinians in southern Mendoza Province, which is the only place in the Neuquén Basin with marine outcrops spanning the Triassic/Jurassic boundary. A two-stage recovery pattern was recognized. During the first stage (Hettangian–Sinemurian) only solitary corals, most of them discoidal, could be found. After a hiatus encompassing the latest Early Sinemurian and the Late Sinemurian, the second stage (Pliensbachian) developed. A sharp increase in morphological diversity of solitary corals is then recorded, with discoidal, cupolate, patellate, turbinate, trochoid/turbinate, trochoid/ceratoid and maybe cylindrical morphologies. Additionally, colonial forms with low degree of corallite integration (phaceloid and cerioid colonies) appeared in the basin. The diversification trend hereby described provides useful insight regarding the scleractinian recovery after the end-Triassic mass extinction event within southern basins of South America. Furthermore, this recovery pattern is comparable with the one recognized for other regions (Chile, western North America, central Asia) yet it differs from that observed in some European basins. The trend outlined herein for Early Jurassic corals from the Neuquén Basin may reflect a large-scale phenomenon and/or the action of local adverse conditions (such as fluvial influence), which is open to further testing.
publishDate 2017
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