Invertebrates [noun]

The amphioxus, the bridge between invertebrates and vertebrates, is not hermaphrodite.

They cared nothing for mammonism, that some philosophical crank has defined to be a physical force that makes men invertebrates.

In a short paper of 1824 Serres attempted an explanation of the nervous system of Invertebrates.

In them all classes of seaweeds and marine invertebrates may be found and their habits watched.

We have another striking example among the invertebrates in the snails (gasteropoda).

To these he opposed the two lower classes, insects and worms, as invertebrates.

It was not until about the middle of the century that such layers were found in some of the invertebrates.

The three chief groups of invertebrates, which in their turn differ widely from each other, have a very different development.

These tricellular reflex organs are preponderantly developed in the great majority of the invertebrates.

The first of the three sections into which this period of life is divided is known as the Silurian age, the age of invertebrates.