Rissoina pusilla is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoinidae. Description Only in fossil state. Distribution This species occurs in the Indian Ocean off Madagascar. References Dautzenberg, Ph. (1923). Liste préliminaire des mollusques marins de Madagascar et description de deux espèces nouvelles. J. conchyliol. 68: 21-74 External links Rissoinidae Gastropods described in 1814