Sá, Artur AbreuPiçarra, José ManuelGutiérrez-Marco, Juan CarlosSarmiento, Graciela Noemi2010-06-292010-06-292009-06Sá, Artur Abreu; Piçarra, José Manuel; Gutiérrez-Marco, Juan arlos; Sarmiento, Graciela Noemi - P-rich nodules and hollow graptolites in the upper Silurian of the Moncorvo synclinorium, north Portugal. In:Time and Life in the Silurian: a multidisciplinary approach, Subcommission on Silurian Stratigraphy Field Meeting 2009, Abstract Book, Sardinia, Italy, June 4-11, 2009http://hdl.handle.net/10400.9/738engGraptólitosSilúricoSinclinal de Moncorvo (Portugal)P-rich nodules and hollow graptolites in the upper Silurian of the Moncorvo synclinorium, north Portugalconference object