Studies on the knowledge of the Venezuelan malacofauna begin in the nineteenth century with the work of German malacologist
Eduard von Martens around 1873 who published the first list of the mollusks Venezuela. Three years later the German-Venezuelan Adolfo Ernst, taking as its starting point and extending Martens list, published a second list in 1876. Subsequent to these two pioneering nineteenth century works, only sporadic descriptions were published in foreign publications. It took about half a century for new listings of malacofauna of Venezuela to be published, this time by American H. B. Baker in the mid-1920s. H. Richards G. Hummelinck & P. W. Malacofauna 1940 describing the island of Margarita, Martinez and Miranda in 1968 described pulmonate molluscs of Caracas and surrounding areas, Fernández in 1982, which describes sitecueros of slugs and Venezuela, Martinez et al. in 2004 which states bivalve fauna Venezuela freshwater, Lasso and collaborators in 2009 which describes the fauna of the basin of the
Orinoco. == Diversity ==