This Pleistocene shell survives to this day as the well-known "Lightning Whelk" or "Texas Whelk". It is a sinister shell, i.e. it is one of the few wherein the shell's opening coils to the left, whereas most of the world's shells coil to the right. This was collected by and is in the collect of PMNS Curator, T. W. Proctor, J.D. It is of the Family of MELONGENIDAE and the Genus and Species of Busycon contrarium.