| The echinoderm body plan has pentameral symmetry, a water vascular system and a ring-shaped nervous system. |
| This paper is the first in a series of studies re-describing echinoderm taxa from these biogeographically important Paleozoic assemblages. |
| Most such particles are echinoderm stem ossicles, brachiopods, bryozoans or other corals. |
| By contrast with other echinoderm species, basket stars are unknown in storm drift lines. |
| 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. |
