Pennsylvanian biota of the Sierra Agua Verde, Sonora, Mexico: biostratigraphic and paleogeographic considerations
The marine biota from the middle Pennsylvanian outcrops of the Sierra Agua Verde, located in mid-eastern Sonora, consists of phylloid algaeof the generaKomiaandEugonophyllumand a number of invertebrates. These species include bioaccumulations of chaetetids; brachiopods ofthe generaDielasmasp.,Reticu...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2015 |
| País: | México |
| Institución: | Universidad de Sonora |
| Repositorio: | Redalyc-USON |
| OAI Identifier: | oai:redalyc.org:42539890025 |
| Acceso en línea: | https://www.redalyc.org/articulo.oa?id=42539890025 https://www.redalyc.org/journal/425/42539890025/ https://www.redalyc.org/journal/425/42539890025/html/ https://www.redalyc.org/journal/425/42539890025/42539890025.epub https://www.redalyc.org/journal/425/42539890025/movil |
| Access Level: | acceso abierto |
| Palabra clave: | Biología NW Sonora Carboniferous Pennsylvanian Upper Paleozoic |
| Sumario: | The marine biota from the middle Pennsylvanian outcrops of the Sierra Agua Verde, located in mid-eastern Sonora, consists of phylloid algaeof the generaKomiaandEugonophyllumand a number of invertebrates. These species include bioaccumulations of chaetetids; brachiopods ofthe generaDielasmasp.,Reticulariinasp.,Anthracospirifersp.,Antiquatoniasp.; bryozoans of the genusThamniscus; tabulate corals such asSyringoporaand solitary corals such asZaphrentis; fusulinid foraminifera such asPseudostaffella,Eoshubertella texana,Fusulinella llanoensis,andZellerella; gastropods of the genusEuomphalusandDonaldina; and the crinoid generaCyclocaudex,Cyclocrista,Heterosteleschus,Lam-prosterigma,Mooreanteris,Pentagonopternix,Preptopremium,Cycloscaspus, andPentaridica. The material was collected from outcrops in thefirst 512 m of the La Joya Formation, and their sediments have a total thickness of 780 m and consist of limestone interbedded with calcareousmudstone and sandstone lenses. The age of the middle Pennsylvanian strata corresponds to that of the Atokan stage (311 million years). The speciesassemblages are typical of a shallow tropical marine benthos. The analysis of the distribution of the species allowed for the determination of theirpaleogeographic relationships with the components of the biota of the Carboniferous strata of Texas and Kansas in the United States of America,which belong to the province of the North American Craton.All Rights Reserved © 2015 Universidad Nacional Autónoma de México, Instituto de Biología. This is an open access item distributed under theCreative Commons CC License BY-NC-ND 4.0. |
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