| Full text | |
| Author(s): Show less - |
Morais, Luana
;
Freitas, Bernardo T.
;
Fairchild, Thomas Rich
;
Arcos, Rolando Esteban Clavijo
;
Guillong, Marcel
;
Vance, Derek
;
de Campos, Marcelo Da Roz
;
Babinski, Marly
;
Pereira, Luiz Gustavo
;
Leme, Juliana M.
;
Boggiani, Paulo C.
;
Oses, Gabriel L.
;
Rudnitzki, Isaac D.
;
Galante, Douglas
;
Rodrigues, Fabio
;
Trindade, Ricardo I. F.
Total Authors: 16
|
| Document type: | Journal article |
| Source: | SCIENTIFIC REPORTS; v. 14, n. 1, p. 18-pg., 2024-06-28. |
| 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 similar to 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. (AU) | |
| FAPESP's process: | 21/07007-7 - Palaeometry applied to the investigation of biomineralization, environments and fossil preservation |
| Grantee: | Gabriel Ladeira Oses |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 20/16140-0 - Paleoproterozoic and Neoproterozoic phosphorite depositional systems in Brazil, genetic processes and application in agriculture |
| Grantee: | Paulo César Boggiani |
| Support Opportunities: | Regular Research Grants |
| FAPESP's process: | 18/03001-1 - Paleontological, sedimentological and stratigraphic study of the Ediacaran fossils of the Corumbá group |
| Grantee: | Juliana de Moraes Leme Basso |
| Support Opportunities: | Research Grants - Visiting Researcher Grant - International |
| FAPESP's process: | 23/14250-0 - Expanding the frontiers of research in biomineralization and fossil preservation |
| Grantee: | Gabriel Ladeira Oses |
| Support Opportunities: | Scholarships in Brazil - Generation Project |
| FAPESP's process: | 16/06114-6 - The Neoproterozoic Earth System and the rise of biological complexity |
| Grantee: | Ricardo Ivan Ferreira da Trindade |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 17/22099-0 - Mechanisms of biomineralization and paleobiology of neoproterozoic eukaryotic microfossils from South Paraguay Belt |
| Grantee: | Luana Pereira Costa de Morais |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 16/05937-9 - Comparative study of vase-shaped microfossils (VSMs) in collections at Harvard University and the University of California at Santa Barbara (Cambridge, MA; Santa Barbara, CA, USA) |
| Grantee: | Luana Pereira Costa de Morais |
| Support Opportunities: | Scholarships abroad - Research Internship - Doctorate |
| FAPESP's process: | 22/06485-5 - Expanding the frontiers of research in biomineralization and fossil preservation |
| Grantee: | Gabriel Ladeira Oses |
| Support Opportunities: | Generation Project Research Grant |