the world > animals > invertebrates > subkingdom Metazoa > grade Triploblastica or Coelomata > phylum Echinodermata > [noun] > subphylum Eleutherozoa > class Asteroidea > order Phanerozonia > member of genus Goniaster (2)
a fossil starfish of the genus Goniaster.
More fully sea pincushion. Any of various starfishes having the aboral surface covered with paxillae. Now usually attributive.