Considered to be an index species of the Belle Glade Member of the Bermont Formation (Petuch & Roberts, 2007).
"The shell is of medium size, stout, heavy, usually with a dark, grayish black color and a high, surface gloss. The body whorl is convex, elliptical, widest a little above the middle, the anterior end appearing decidedly narrow and short. Spire low, conic, formed of about seven whorls, including the nuclear of three, smooth turns. The sutures are narrowly channelled, their outer edge sharp but not flaring as in O. sayana Ravenel. A ribbon of callus beginning at the sutural termination borders the suture on the inner side, forming a small angled overhang and coating the lower half of the spire surface as a sloping or shelving deposit. Pillar structure normal for the genus, in two unequal parts, the upper section with a short lirae; the lower longer section with six or more long, slender ones. The siphonal fasciole band covers the lower one-third, simple or undivided, its upper edge entering the aperture a little below middle. A series of about ten lirae lie along the parietal wall, nearly its whole length, strong below, weak above, the lirae often paired or divided along the top, or flattened as if impressed at their outer ends. A lighter colored, sometimes white, band borders the outer side of the nearly straight lip, forming a wider band within and continued forward around the large, siphonal canal notch. Length 44 mm., diameter 19.4 mm.". Pleistocene. Bermont Formation. Belle Glade pit, Florida, USA.