| Answer | Crossword Clue |
|---|---|
| echinoids | An echinoderm of the class Echinoidea; a sea urchin |
| crinoids | An echinoderm of the class Crinoidea, which comprises the sea lilies and feather stars |
| crinoid | any echinoderm of the class Crinoidea, having a cup-shaped body to which are attached branched, radiating arms, comprising the sea lilies, feather stars, and various fossil forms |
| crinoidal | any echinoderm of the class Crinoidea, having a cup-shaped body to which are attached branched, radiating arms, comprising the sea lilies, feather stars, and various fossil forms |
| echinoid | belonging or pertaining to the class Echinoidea, comprising mainly sea urchins and sand dollars |
| asteroids | An echinoderm of the class Asteroidea; a starfish |
