A possible chelonian egg from the Brazilian late cretaceous

Detalhes bibliográficos
Autor(a) principal: AZEVEDO,SERGIO ALEX
Data de Publicação: 2000
Outros Autores: GALLO,VALÉRIA, FERIGOLO,JORGE
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Anais da Academia Brasileira de Ciências (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000200007
Resumo: This paper describes a possible fossil egg proceeding from the Bauru Group, Late Cretaceous of Paraná Basin, Brazil. External morphology, dimensions, texture and shell ornamentation examined under electron microscopy show close resemblance to the Recent podocnemidid chelonian eggs. Association with bony material in the outcrop suggests that it is related to a species of Podocnemis. Computerized tomography reveals a high density outer region corresponding to the shell component layers, and successive layers with decreasing density towards the nucleus. An area of high density in the central region may represent remains of an embryo.
id ABC-1_d63c4d6624bc6ff7959e01ca5a591f49
oai_identifier_str oai:scielo:S0001-37652000000200007
network_acronym_str ABC-1
network_name_str Anais da Academia Brasileira de Ciências (Online)
repository_id_str
spelling A possible chelonian egg from the Brazilian late cretaceousFossil eggchelonianLate CretaceousBauru GroupThis paper describes a possible fossil egg proceeding from the Bauru Group, Late Cretaceous of Paraná Basin, Brazil. External morphology, dimensions, texture and shell ornamentation examined under electron microscopy show close resemblance to the Recent podocnemidid chelonian eggs. Association with bony material in the outcrop suggests that it is related to a species of Podocnemis. Computerized tomography reveals a high density outer region corresponding to the shell component layers, and successive layers with decreasing density towards the nucleus. An area of high density in the central region may represent remains of an embryo.Academia Brasileira de Ciências2000-06-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000200007Anais da Academia Brasileira de Ciências v.72 n.2 2000reponame:Anais da Academia Brasileira de Ciências (Online)instname:Academia Brasileira de Ciências (ABC)instacron:ABC10.1590/S0001-37652000000200007info:eu-repo/semantics/openAccessAZEVEDO,SERGIO ALEXGALLO,VALÉRIAFERIGOLO,JORGEeng2000-08-07T00:00:00Zoai:scielo:S0001-37652000000200007Revistahttp://www.scielo.br/aabchttps://old.scielo.br/oai/scielo-oai.php||aabc@abc.org.br1678-26900001-3765opendoar:2000-08-07T00:00Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)false
dc.title.none.fl_str_mv A possible chelonian egg from the Brazilian late cretaceous
title A possible chelonian egg from the Brazilian late cretaceous
spellingShingle A possible chelonian egg from the Brazilian late cretaceous
AZEVEDO,SERGIO ALEX
Fossil egg
chelonian
Late Cretaceous
Bauru Group
title_short A possible chelonian egg from the Brazilian late cretaceous
title_full A possible chelonian egg from the Brazilian late cretaceous
title_fullStr A possible chelonian egg from the Brazilian late cretaceous
title_full_unstemmed A possible chelonian egg from the Brazilian late cretaceous
title_sort A possible chelonian egg from the Brazilian late cretaceous
author AZEVEDO,SERGIO ALEX
author_facet AZEVEDO,SERGIO ALEX
GALLO,VALÉRIA
FERIGOLO,JORGE
author_role author
author2 GALLO,VALÉRIA
FERIGOLO,JORGE
author2_role author
author
dc.contributor.author.fl_str_mv AZEVEDO,SERGIO ALEX
GALLO,VALÉRIA
FERIGOLO,JORGE
dc.subject.por.fl_str_mv Fossil egg
chelonian
Late Cretaceous
Bauru Group
topic Fossil egg
chelonian
Late Cretaceous
Bauru Group
description This paper describes a possible fossil egg proceeding from the Bauru Group, Late Cretaceous of Paraná Basin, Brazil. External morphology, dimensions, texture and shell ornamentation examined under electron microscopy show close resemblance to the Recent podocnemidid chelonian eggs. Association with bony material in the outcrop suggests that it is related to a species of Podocnemis. Computerized tomography reveals a high density outer region corresponding to the shell component layers, and successive layers with decreasing density towards the nucleus. An area of high density in the central region may represent remains of an embryo.
publishDate 2000
dc.date.none.fl_str_mv 2000-06-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000200007
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000200007
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0001-37652000000200007
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Academia Brasileira de Ciências
publisher.none.fl_str_mv Academia Brasileira de Ciências
dc.source.none.fl_str_mv Anais da Academia Brasileira de Ciências v.72 n.2 2000
reponame:Anais da Academia Brasileira de Ciências (Online)
instname:Academia Brasileira de Ciências (ABC)
instacron:ABC
instname_str Academia Brasileira de Ciências (ABC)
instacron_str ABC
institution ABC
reponame_str Anais da Academia Brasileira de Ciências (Online)
collection Anais da Academia Brasileira de Ciências (Online)
repository.name.fl_str_mv Anais da Academia Brasileira de Ciências (Online) - Academia Brasileira de Ciências (ABC)
repository.mail.fl_str_mv ||aabc@abc.org.br
_version_ 1754302855394623488

Registros relacionados