He discovered many fossils and created several geological and paleontological reports in his research that he gave to his brother.

His travels resulted in "Geological Exploration in Patagonia" published in 1890 and "Annals of the Argentine Scientific Society" in 1903.

Throughout his life he also published "Anthropological and geological research in the southern maritime coast of the province of Buenos Aires" together with Luis Maria Torres in 1913, "El fémur de Miramar.

Further proof of the presence of the man in the Tertiary of the Argentine Republic "in 1915,"Two new species of toxodonts" in 1917, "The archaeologic and osteolytic sites of Miramar; The question of tertiary man in Argentina, summary of the main facts after the death of Florentino Ameghino" published in 1918 and "Description of the Megatherium gallardoi C. Amegh.

He also collected information on the different languages of the Pampas and Patagonian indigenous people , which was later used by Dr. Roberto Lehmann-Nitsche.