Punctulum flavum is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae. Description Distribution References Golikov A.N. & Sirenko B.I. (1998) Prosobranch gastropods of the continental slope of Kurile Islands.[In Russian] Ruthenica 8(2): 91–135. Hasegawa K. (2009) Upper bathyal gastropods of the Pacific coast of northern Honshu, Japan, chiefly collected by R/V Wakataka-maru. In: T. Fujita (ed.), Deep-sea fauna and pollutants off Pacific coast of northern Japan. National Museum of Nature and Science Monographs 39: 225-383. Hasegawa K. & Okutani T. (2011) A review of bathyal shell-bearing gastropods in Sagami Bay. Memoirs of the National Sciences Museum, Tokyo 47: 97-144. Rissoidae Gastropods described in 1964