Palaeontological analyses across the Ediacaran-Cambrian boundary, Upper Corumbá Group, Brazil

This work presents the results of a palaeontological analysis focused on twenty-six species sampled in five sections of the Tamengo and Guaicurus formations, Corumbá and Ladário regions: Corcal and Laginha quarries, Porto Sobramil, Porto Figueiras and Ecoparque Cacimba. Besides, palaeoecological and...

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Detalles Bibliográficos
Autores: ADÔRNO, Rodrigo Rodrigues, WALDE, D.H.G., CARMO, D.A. do, DENEZINE, M., CORTIJO, I., SANCHEZ, E.A.M., TOBIAS, T.C., FAZIO, G., WARREN, L.V., ERDTMANN, B.D., CAI, Y., GIORGIONI, M., RAMOS, M.E.A.F., BAPTISTA, M.C., GUIMARÃES, E.M., FIGUEIREDO, M.F., GERMS, G.J.
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2019
País:Brasil
Institución:Companhia de Pesquisa de Recursos Minerais (CPRM)
Repositorio:Repositório Institucional de Geociências - RIGEO
Idioma:inglés
OAI Identifier:oai:rigeo.sgb.gov.br:doc/21602
Acceso en línea:https://rigeo.sgb.gov.br/handle/doc/21602
Access Level:acceso abierto
Palabra clave:Micropaleontologia
Bioestratigrafia
Grupo Alto Corumbá
Mato Grosso do Sul
Corumbá Group
Biostratigraphy
Micropaleontology
Descripción
Sumario:This work presents the results of a palaeontological analysis focused on twenty-six species sampled in five sections of the Tamengo and Guaicurus formations, Corumbá and Ladário regions: Corcal and Laginha quarries, Porto Sobramil, Porto Figueiras and Ecoparque Cacimba. Besides, palaeoecological and palaeoenvironmental inferences are presented based on the occurrence of this fossil assemblage. Cloudina carinata Cortijo et al., 2010, previously documented in Spain and Siberia, presents an unprecedented occurrence in the American continent, in siltstones of the Tamengo Formation at Porto Figueiras section, Municipality of Corumbá, Mato Grosso do Sul State, Brazil. The biota of the Tamengo Formation is updated and composed of three biomineralizing metazoans, including poriferan spicules, putative sponge gemmule, and a sessile epibiontic prokaryotic colony. The present work also deals with the taxonomy and stratigraphic distribution of four ichnospecies and three vendotaenid species that integrate the updated benthic fauna for the upper portion of Corumbá Group.

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