Stelleroidea is a superclass of marine invertebrates including three classes: ...
Found on
http://en.wikipedia.org/wiki/Stelleroidea
(from the article `echinoderm`) ...symmetrical with more or less star-shaped body resulting from growth of arms in 1 plane along 5 divergent axes; central mouth; 5 arms; dorsal tube ...
Found on
http://www.britannica.com/eb/a-z/s/159
The stelleroidea are a class of Phylum echinodermata. They are the starfishes and brittle stars. They have a five-rayed symmetry clearly indicated by 'arms' which radiate out from the centre of the body. The mouth is on the lower side of the flattened body.
Found on
http://www.probertencyclopaedia.com/browse/BSB.HTM
No exact match found.
