Bosio, Giulia Ultrastructure, composition, and 87Sr/86Sr dating of shark teeth from lower Miocene sediments of southwestern Peru - Oxford Elsevier Science October 2022 - 19 p. ilus. Subjects--Topical Terms: DIENTES FOSILESPALEOAMBIENTESSEDIMENTACIONESTRATIGRAFÍAESMALTES Subjects--Geographic Terms: PERU Subjects--Index Terms: FORMACIÓN CHILCATAY CUENCA PISCO