Tthere are many not close-set, flexuous, longitudinal ribs above the periphery, but on the base merely lines of growth.
These striae are crossed by fine close-set spiral lines, producing a reticulated appearance.
The obtuse keel which ascends the spire above the suture is ornamented with close-set elongate tubercles.
The fish is reddish brown to black in color; its skin is covered with numerous close-set spines.
The base of the shell shows seven rather close-set squarish cords, those nearer the axis most adjacent to each other.
Their heads were doglike, with small close-set ears.
The interspaces have about the same width as the ribs, and are beautifully barred with close-set laminae.
It is decussated by elevated rather close-set lines and oblique striae.
