Eurytrochus affinis is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails.Poppe G.T., Tagaro S.P. & Dekker H. (2006) The Seguenziidae, Chilodontidae, Trochidae, Calliostomatidae and Solariellidae of the Philippine Islands. Visaya Supplement 2: 1-228. The size of the shell varies between 3 mm and 9 mm. This marine shell occurs off the Ryukyus, Japan, Taiwan and the Philippines
References
External links Encyclopedia of Life