Retilaskeya emersoniiRetilaskeya emersonii is a species of sea snail, a gastropod in the family Newtoniellidae, which is known from the northwestern Atlantic Ocean. It was described by C.B. Adams in 1839.DescriptionThe maximum recorded shell length is 11.4 mm.HabitatMinimum recorded depth is 0 m. Maximum recorded depth is 70 m.