Hystrivasum

Hystrivasum is an extinct genus of medium-sized fossil predatory gastropods in the family Turbinellidae. The species in this genus are known from the Pliocene and Pleistocene deposits of Florida.

Species
Species within the genus Hystrivasum include:
 * Hystrivasum horridum
 * Hystrivasum jacksonense
 * Hystrivasum locklini
 * Hystrivasum squamosum