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	Provedor de dados Ameghiniana (1) Autor Ros,Sonia (1) de Renzi,Miquel (1) Palavra-chave Bivalves (1) Databases (1) Fossil record (1) Preservation biases (1) Rates of evolution (1) Tipo do documento Info:eu-repo/semantics/article (1) Ano 2005 (1) País Argentina (1) Idioma Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 1 Primeira ... 1 ... Última Preservation biases, rates of evolution and coherence of databases: Bivalvia as a study case Ameghiniana Ros,Sonia; de Renzi,Miquel. Several hypotheses about the influence of preservation on Bivalvia rates of evolution estimates (marine and freshwater families) were tested in a previous paper. However, the database used for those tests had a patchy quality and our results were provisional. Now an improved database dealing with only marine families has been used in order to test again those hypotheses. We removed freshwater families from the early database and we test the statistical hypotheses on these two data sources. Diversification patterns remain stable in general with these different databases; however, only the improved database shows the mass extinction at the end of the Triassic times. Statistical conclusions in the previous paper are generally confirmed in the present study.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Databases; Fossil record; Preservation biases; Bivalves; Rates of evolution. Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0002-70142005000300003 Registros recuperados: 1 Primeira ... 1 ... Última

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