- Source: Hystrivasum squamosum
Hystrivasum squamosum is an extinct species of medium-sized fossil sea snail, a predatory marine gastropod in the family Turbinellidae.
References
E. H. Vokes. 1966. The genus Vasum (Mollusca: Gastropoda) in the new world. Tulane Studies in Geology and Paleontology 5(1):1-35