Orville A. Derby Medallion

Bronze medallion with the effigy of Orville A. Derby (1851-1915), an American geologist who came to Brazil in 1870, invited by Charles Hartt, who dedicated himself to geology and paleontology in an exemplary way, having participated in the Geological Commission of the Empire and the organization, in the National Museum, of the collections of rocks, minerals and fossils, collected by that Commission. He founded and directed the Geographical and Geological Commission of São Paulo (1886-1904) and the Geological and Mineralogical Service of Brazil (1907-1915). He published about one hundred and seventy works and is considered the Father of Brazilian Geology.