MOLLUSK • E-FREE TRANSLATION.COM • Definition of Mollusk

... distance. There is only one step from the lamprey to the mollusks or soft-bodied animals, and this is the course which animal organisation seems really to have taken in its progress. But nature never moves forward in a single straight line. In passing from the mollusk to the fish to get thence to the higher vertebrates, she turned aside in another direction toward a class of animals which rises far above mollusks, but ...

— The History of a Mouthful of Bread - And its effect on the organization of men and animals • Jean Mace