The anterior sections of the radular tooth is longer than or similar in length to the posterior section.

The anterior section of the radula is equal to or slightly longer than the posterior section.

The anterior sections of the radular tooth is shorter than the posterior section.

The blade is long and may extend the full length of the anterior section.

The blade is short to moderate extending about one-third to one-half the length of the anterior section.

The anterior section of the radula is much longer than the posterior section.

The authors also identify a dark strand on the lower interior surface of the anterior section, which they speculate is an endostyle.

The anterior section has five structures on each side, which are interpreted as gills.

The anterior section of the shell is rounded.

The anterior section of the ventral side has strong transverse ribs.