The circuit used by the decorator of this box is dextral or sunwise.
Vertigo (Sphyradium) edentula is dextral and without denticles.
Sinistral: Having the aperture of the shell at the left; opposite of dextral.
It has been made from the broad beak of a Strombus or dextral whorled Busycon.
The bead illustrated in Fig. 6 has been made from the column of some dextral whorled ...