sourceTaxonName: Vallonia costata (O. F. Müller, 1774)
sourceTaxonPath: Animalia | Mollusca | Gastropoda | Stylommatophora | Valloniidae | Vallonia | Vallonia costata
targetTaxonName: top and at base of limestone support wall
localityName: Hyde Park, W side of Metra Electric train line S of 60th Street, at U. of C. Pre