Data/hora: 11/06/2024 02:43:21

Provedor de dados: | 41
País: | Argentina
Título: | Late Cretaceous Megaloolithid eggs from Salitral de Santa Rosa (Río Negro, Patagonia, Argentina): inferences on the titanosaurian reproductive biology
Autores: | Salgado,Leonardo; Magalhaes Ribeiro,Claudia; García,Rodolfo A; Fernández,Mariela S.
Data: | 2009-12-01
Ano: | 2009
Palavras-chave: | Fossil eggs; Megaloolithidae; Late Cretaceous; Río Negro province; Patagonia; Argentina.
Resumo: | Late Cretaceous eggs and eggshell fragments assigned to the oofamily Megaloolithidae from Salitral de Santa Rosa (Río Negro Province, northern Patagonia, Argentina) are studied and compared with other Patagonian specimens assigned to the same oofamily. Megaloolithids from Santa Rosa are nearly spherical (mean diameter 10-12 cm) and their eggshell surface is ornamented with hemispheric nodes 0.3-0.8 mm in diameter; pore openings are subcircular to polygonal, and their diameter varies between 0.1 and 0.32 mm. Eggshell thickness ranges from 1 to 2.6 mm. The eggshell is composed of fanshaped units that normally display diverging borders and arched accretionary lines. The megaloolithid eggs from Santa Rosa are associated, at least in some sites of the area, to eggs of different kinds, more usually, thick-shelled faveoloolithids.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142009000400003
Editor: | Asociación Paleontológica Argentina
Formato: | text/html
Fonte: | Ameghiniana  v.46 n.4 2009
Fonte: | info:eu-repo/semantics/openAccess