| There seems to be little or no literature on the central nervous system of this form of echinoderm. |
| It also agrees with the echinoderm larv in the absence of sense organs on the proral lobe. |
| Crinoids are marine invertebrates, classified in the echinoderm family, in which we find in particular sea urchins and starfishes. |
| In the body of an echinoderm can be usually recognized an upper or dorsal surface and a lower or ventral surface. |
| The name echinoderm comes from the Greek echinos, meaning hedgehog, and derma, the skin. |
| It was at first thought that we had before us an echinoderm in the act of transformation. |
