FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL)
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.4072/rbp.2020.3.03 http://hdl.handle.net/11449/209649 |
Resumo: | Fossil amniotic eggs have great informative potential, especially regarding reproductive and evolutionary aspects of vertebrates. However, there are only few intact specimens or with fossilized embryos within, and the rare reported cases are mostly related to dinosaurs. In Brazil, the records of these ichnofossils are practically restricted to the Baum Basin. This research aims to describe the first amniotic egg found in carbonate concretions in the Romualdo Formation, adding information to the study of these fossils and to the paleontological context of the basin. The specimen was collected at the Sitio Pe da Serra do Felix, in the Municipality of Simbes, Piaui State, Brazil. The methodology employed was based on Scanning Electron Microscopy, Energy Dispersive Spectroscopy and Optical Microscopy techniques, as well as computed tomography analyses. The morphological and microstructural characteristics of the shell suggests the identification of the fossil as a crocodylomorph egg. This specimen differs from other fossil eggs assigned to the aforementioned group by its small size and considerably thick shell. The tomographic sections revealed possible basic structures of an embryo inside the egg, suggesting that this is the first fossilized egg with a crocodylomorph embryonic trace found in the world. |
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FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL)ichnofossilamniotic eggembryoCrocodylomorphaAptianRomualdo FormationFossil amniotic eggs have great informative potential, especially regarding reproductive and evolutionary aspects of vertebrates. However, there are only few intact specimens or with fossilized embryos within, and the rare reported cases are mostly related to dinosaurs. In Brazil, the records of these ichnofossils are practically restricted to the Baum Basin. This research aims to describe the first amniotic egg found in carbonate concretions in the Romualdo Formation, adding information to the study of these fossils and to the paleontological context of the basin. The specimen was collected at the Sitio Pe da Serra do Felix, in the Municipality of Simbes, Piaui State, Brazil. The methodology employed was based on Scanning Electron Microscopy, Energy Dispersive Spectroscopy and Optical Microscopy techniques, as well as computed tomography analyses. The morphological and microstructural characteristics of the shell suggests the identification of the fossil as a crocodylomorph egg. This specimen differs from other fossil eggs assigned to the aforementioned group by its small size and considerably thick shell. The tomographic sections revealed possible basic structures of an embryo inside the egg, suggesting that this is the first fossilized egg with a crocodylomorph embryonic trace found in the world.Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Univ Fed Ceara, Dept Geol, Programa Posgrad Geol, Campus Pici,Av Mister Hull S-N, BR-60455760 Fortaleza, Ceara, BrazilUniv Estadual Vale Acarau, Lab Paleontol, Curso Ciencias Biol, Campus Betania,Av Univ 850, BR-62010295 Sobral, Ceara, BrazilUniv Fed Piaui, Lab Paleontol Picos, Curso Ciencias Biol, Campus Senador Helvidio Nunes de Barros, BR-64607670 Picos, Piaui, BrazilUniv Estadual Paulista, Dept Reprod Anim & Radiol Vet, Campus Botucatu, BR-18618681 Botucatu, SP, BrazilUniv Fed Ceara, Nucleo Reg Ofiol, Dept Biol, Campus Pici,Av Mister Hull S-N, BR-60455760 Fortaleza, Ceara, BrazilUniv Estadual Paulista, Dept Reprod Anim & Radiol Vet, Campus Botucatu, BR-18618681 Botucatu, SP, BrazilCAPES: 001CNPq: PQ 311961/2016-9Soc Brasileira PaleontologiaUniv Fed CearaUniv Estadual Vale AcarauUniv Fed PiauiUniversidade Estadual Paulista (Unesp)Abreu, DayanneSales Viana, Maria SomaliaDe Oliveira, Paulo VictorViana, Gustavo Fernandes [UNESP]Borges-Nojosa, Diva Maria2021-06-25T12:24:55Z2021-06-25T12:24:55Z2020-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article185-193http://dx.doi.org/10.4072/rbp.2020.3.03Revista Brasileira De Paleontologia. Sao Leopoldo: Soc Brasileira Paleontologia, v. 23, n. 3, p. 185-193, 2020.1519-7530http://hdl.handle.net/11449/20964910.4072/rbp.2020.3.03WOS:000589049900003Web of Sciencereponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengRevista Brasileira De Paleontologiainfo:eu-repo/semantics/openAccess2021-10-23T19:49:53Zoai:repositorio.unesp.br:11449/209649Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462021-10-23T19:49:53Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL) |
title |
FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL) |
spellingShingle |
FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL) Abreu, Dayanne ichnofossil amniotic egg embryo Crocodylomorpha Aptian Romualdo Formation |
title_short |
FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL) |
title_full |
FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL) |
title_fullStr |
FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL) |
title_full_unstemmed |
FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL) |
title_sort |
FIRST RECORD OF AN AMNIOTIC EGG FROM THE ROMUALDO FORMATION (LOWER CRETACEOUS, ARARIPE BASIN, BRAZIL) |
author |
Abreu, Dayanne |
author_facet |
Abreu, Dayanne Sales Viana, Maria Somalia De Oliveira, Paulo Victor Viana, Gustavo Fernandes [UNESP] Borges-Nojosa, Diva Maria |
author_role |
author |
author2 |
Sales Viana, Maria Somalia De Oliveira, Paulo Victor Viana, Gustavo Fernandes [UNESP] Borges-Nojosa, Diva Maria |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Univ Fed Ceara Univ Estadual Vale Acarau Univ Fed Piaui Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Abreu, Dayanne Sales Viana, Maria Somalia De Oliveira, Paulo Victor Viana, Gustavo Fernandes [UNESP] Borges-Nojosa, Diva Maria |
dc.subject.por.fl_str_mv |
ichnofossil amniotic egg embryo Crocodylomorpha Aptian Romualdo Formation |
topic |
ichnofossil amniotic egg embryo Crocodylomorpha Aptian Romualdo Formation |
description |
Fossil amniotic eggs have great informative potential, especially regarding reproductive and evolutionary aspects of vertebrates. However, there are only few intact specimens or with fossilized embryos within, and the rare reported cases are mostly related to dinosaurs. In Brazil, the records of these ichnofossils are practically restricted to the Baum Basin. This research aims to describe the first amniotic egg found in carbonate concretions in the Romualdo Formation, adding information to the study of these fossils and to the paleontological context of the basin. The specimen was collected at the Sitio Pe da Serra do Felix, in the Municipality of Simbes, Piaui State, Brazil. The methodology employed was based on Scanning Electron Microscopy, Energy Dispersive Spectroscopy and Optical Microscopy techniques, as well as computed tomography analyses. The morphological and microstructural characteristics of the shell suggests the identification of the fossil as a crocodylomorph egg. This specimen differs from other fossil eggs assigned to the aforementioned group by its small size and considerably thick shell. The tomographic sections revealed possible basic structures of an embryo inside the egg, suggesting that this is the first fossilized egg with a crocodylomorph embryonic trace found in the world. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-07-01 2021-06-25T12:24:55Z 2021-06-25T12:24:55Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.4072/rbp.2020.3.03 Revista Brasileira De Paleontologia. Sao Leopoldo: Soc Brasileira Paleontologia, v. 23, n. 3, p. 185-193, 2020. 1519-7530 http://hdl.handle.net/11449/209649 10.4072/rbp.2020.3.03 WOS:000589049900003 |
url |
http://dx.doi.org/10.4072/rbp.2020.3.03 http://hdl.handle.net/11449/209649 |
identifier_str_mv |
Revista Brasileira De Paleontologia. Sao Leopoldo: Soc Brasileira Paleontologia, v. 23, n. 3, p. 185-193, 2020. 1519-7530 10.4072/rbp.2020.3.03 WOS:000589049900003 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Revista Brasileira De Paleontologia |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
185-193 |
dc.publisher.none.fl_str_mv |
Soc Brasileira Paleontologia |
publisher.none.fl_str_mv |
Soc Brasileira Paleontologia |
dc.source.none.fl_str_mv |
Web of Science reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965291149524992 |