Eucyclotoma stegeri (McGinty, 1955) is a member of the family Raphitomidae that reaches about 1.3 mm (about 0.5 inch). The species has a spindle-shaped shell, with whorls strongly angled at their periphery. The sculpture consists of 8–12 axial ribs that are more prominent where the “angle” of each whorl is located (the periphery.) The color is whitish with flecks of grayish or brown color.
