A possible chelonian egg from the Brazilian late cretaceous
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| Natura: | Artículo científico |
| Lingua: | en |
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Academia Brasileira de Ciências
2000
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| _version_ | 1876440948175536128 |
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| author | Sergio Alex Azevedo |
| author_facet | Sergio Alex Azevedo |
| contents | A possible chelonian egg from the Brazilian late cretaceous Sergio Alex Azevedo Valéria Gallo Jorge Ferigolo Multidisciplinaria (Ciencias Naturales y Exactas) chelonian Fossil egg Bauru Group Late Cretaceous This paper describes a possible fossil egg proceeding from the Bauru Group, Late Cretaceous of ParanáBasin, Brazil. External morphology, dimensions, texture and shell ornamentation examined under electronmicroscopy show close resemblance to the Recent podocnemidid chelonian eggs. Association with bonymaterial 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 centralregion may represent remains of an embryo. 2000 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32772207 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.2 Vol.72 |
| format | Artículo científico |
| id | redalyc_32772207 |
| institution | Redalyc |
| language | en |
| publishDate | 2000 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | A possible chelonian egg from the Brazilian late cretaceous Sergio Alex Azevedo Multidisciplinaria (Ciencias Naturales y Exactas) chelonian Fossil egg Bauru Group Late Cretaceous A possible chelonian egg from the Brazilian late cretaceous Sergio Alex Azevedo Valéria Gallo Jorge Ferigolo Multidisciplinaria (Ciencias Naturales y Exactas) chelonian Fossil egg Bauru Group Late Cretaceous This paper describes a possible fossil egg proceeding from the Bauru Group, Late Cretaceous of ParanáBasin, Brazil. External morphology, dimensions, texture and shell ornamentation examined under electronmicroscopy show close resemblance to the Recent podocnemidid chelonian eggs. Association with bonymaterial 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 centralregion may represent remains of an embryo. 2000 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32772207 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.2 Vol.72 |
| title | A possible chelonian egg from the Brazilian late cretaceous |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) chelonian Fossil egg Bauru Group Late Cretaceous |
| url | https://www.redalyc.org/articulo.oa?id=32772207 |