Fig. 4

Cover of one of the most influential works by Roth (1888a) with his fundamentals on the stratigraphy of the Pampean region (left). This contribution contains the stratigraphic section from the Paraná riverbank (top right), today crucial information to interpret Roth´s ideas and the major divisions of the "pampean formation" (Roth, 1888a: 404). Photograph of “La Elisa”, the first slaughterhouse in South America, built in 1882 in the town of San Nicolás de los Arroyos (photograph from the archives of the Museo y Archivo Histórico “Gregorio Santiago Chervo”) (bottom right). The excavations for the construction of “La Elisa” benefited access to the stratigraphical sections of the riverbanks of the Paraná River