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Dawn of diverse shelled and carbonaceous animal microfossils at ~ 571 Ma.
Morais, Luana; Freitas, Bernardo T; Fairchild, Thomas Rich; Clavijo Arcos, Rolando Esteban; Guillong, Marcel; Vance, Derek; de Campos, Marcelo Da Roz; Babinski, Marly; Pereira, Luiz Gustavo; Leme, Juliana M; Boggiani, Paulo C; Osés, Gabriel L; Rudnitzki, Isaac D; Galante, Douglas; Rodrigues, Fabio; Trindade, Ricardo I F.
Afiliación
  • Morais L; Department of Geophysics, Institute of Astronomy, Geophysics and Atmospheric Sciences, University of São Paulo (USP), São Paulo, SP, Brazil. lumoraiss@ymail.com.
  • Freitas BT; Department of Geology, São Paulo State University (UNESP), Rio Claro, 13506-900, Brazil. lumoraiss@ymail.com.
  • Fairchild TR; Universidade Estadual de Campinas (UNICAMP), Campinas, SP, Brazil. freitasb@unicamp.br.
  • Clavijo Arcos RE; Institute of Geosciences, University of São Paulo (USP), São Paulo, SP, Brazil.
  • Guillong M; Institute of Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, Clausiusstrasse 25, 8092, Zurich, Switzerland.
  • Vance D; Institute of Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, Clausiusstrasse 25, 8092, Zurich, Switzerland.
  • de Campos MDR; Institute of Geochemistry and Petrology, Department of Earth Sciences, ETH Zurich, Clausiusstrasse 25, 8092, Zurich, Switzerland.
  • Babinski M; Institute of Geosciences, University of São Paulo (USP), São Paulo, SP, Brazil.
  • Pereira LG; Institute of Geosciences, University of São Paulo (USP), São Paulo, SP, Brazil.
  • Leme JM; Institute of Geosciences, University of São Paulo (USP), São Paulo, SP, Brazil.
  • Boggiani PC; Institute of Geosciences, University of São Paulo (USP), São Paulo, SP, Brazil.
  • Osés GL; Institute of Geosciences, University of São Paulo (USP), São Paulo, SP, Brazil.
  • Rudnitzki ID; Programa de Pós-Doutorado, Instituto de Física, Universidade de São Paulo (USP), Rua do Matão, 1371, São Paulo, 05508090, Brazil.
  • Galante D; Laboratório de Arqueometria e Ciências Aplicadas ao Patrimônio Cultural, Instituto de Física, Universidade de São Paulo (USP), Rua do Matão, 1371, São Paulo, 05508090, Brazil.
  • Rodrigues F; Departament of Geology, Federal University of Ouro Preto (UFOP), Ouro Preto, MG, Brazil.
  • Trindade RIF; Institute of Geosciences, University of São Paulo (USP), São Paulo, SP, Brazil.
Sci Rep ; 14(1): 14916, 2024 06 28.
Article en En | MEDLINE | ID: mdl-38942912
ABSTRACT
The Ediacaran-Cambrian transition documents a critical stage in the diversification of animals. The global fossil record documents the appearance of cloudinomorphs and other shelled tubular organisms followed by non-biomineralized small carbonaceous fossils and by the highly diversified small shelly fossils between ~ 550 and 530 Ma. Here, we report diverse microfossils in thin sections and hand samples from the Ediacaran Bocaina Formation, Brazil, separated into five descriptive categories elongate solid structures (ES); elongate filled structures (EF); two types of equidimensional structures (EQ 1 and 2) and elongate hollow structures with coiled ends (CE). These specimens, interpreted as diversified candidate metazoans, predate the latest Ediacaran biomineralized index macrofossils of the Cloudina-Corumbella-Namacalathus biozone in the overlying Tamengo Formation. Our new carbonate U-Pb ages for the Bocaina Formation, position this novel fossil record at 571 ± 9 Ma (weighted mean age). Thus, our data point to diversification of metazoans, including biomineralized specimens reminiscent of sections of cloudinids, protoconodonts, anabaritids, and hyolithids, in addition to organo-phosphatic surficial coverings of animals, demonstrably earlier than the record of the earliest known skeletonized metazoan fossils.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósiles Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Fósiles Límite: Animals País/Región como asunto: America do sul / Brasil Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article País de afiliación: Brasil Pais de publicación: Reino Unido