 In 1944, the American malacologist William James Clench recombined the species as "Phalium (Semicassis) granulatum", and five years later the Brazilian naturalist Frederico Lange de Morretes recombined it as "Semicassis granulatum".American malacologist Clifton S. Weaver reallocated it in the subgenus "Tylocassis" in 1962, though American malacologist R. Tucker Abbott recombined it as "Phalium (Tylocassis) granulatum" six years later.American malacologist Andrew C. Miller recombined it as "Phalium granulatum" in 1983, and German malacologist Kurt Kreipl recombined it as "Semicassis (Semicassis) granulata" in 1997.