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

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...

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Detalles Bibliográficos
Autores principales: Echevarría, Javier, Hodges, Montana S., Damborenea, Susana Ester, Stanley Jr., George D., Manceñido, Miguel Oscar
Formato: Articulo
Lenguaje:Inglés
Publicado: 2017
Materias:
Ciencias Naturales
Scleractinia
Early Jurassic
Neuquén Basin
Diversity recovery
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/146958
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-146958
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Scleractinia
Early Jurassic
Neuquén Basin
Diversity recovery
spellingShingle Ciencias Naturales
Scleractinia
Early Jurassic
Neuquén Basin
Diversity recovery
Echevarría, Javier
Hodges, Montana S.
Damborenea, Susana Ester
Stanley Jr., George D.
Manceñido, Miguel Oscar
Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
topic_facet Ciencias Naturales
Scleractinia
Early Jurassic
Neuquén Basin
Diversity recovery
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.
format Articulo
Articulo
author Echevarría, Javier
Hodges, Montana S.
Damborenea, Susana Ester
Stanley Jr., George D.
Manceñido, Miguel Oscar
author_facet Echevarría, Javier
Hodges, Montana S.
Damborenea, Susana Ester
Stanley Jr., George D.
Manceñido, Miguel Oscar
author_sort Echevarría, Javier
title Recovery of Scleractinian morphologic diversity during the early Jurassic in Mendoza province, Argentina
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
publishDate 2017
url http://sedici.unlp.edu.ar/handle/10915/146958
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