Data/hora: 30/05/2024 07:40:28

Provedor de dados: | 42
País: | Brazil
Título: | A possible chelonian egg from the Brazilian late cretaceous
Autores: | AZEVEDO,SERGIO ALEX; GALLO,VALÉRIA; FERIGOLO,JORGE.
Data: | 2000-06-01
Ano: | 2000
Palavras-chave: | Fossil egg; Chelonian; Late Cretaceous; Bauru Group.
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.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652000000200007
Editor: | Academia Brasileira de Ciências
Relação: | 10.1590/S0001-37652000000200007
Formato: | text/html
Fonte: | Anais da Academia Brasileira de Ciências  v.72 n.2 2000
Fonte: | info:eu-repo/semantics/openAccess