Echinacea (animal)
Introduction The '''Echinacea''' are a superorder of sea urchins. They are distinguished by the presence of a rigid test, with ten buccal plates around the mouth, and solid spines. Unlike some other sea urchins, they also possess gills. The group is a large one, with species found worldwide.Echinacea are part of Animalia (kingdom), Echinodermata (phylum), Echinozoa (subphylum), Echinoidea (class), Euechinoidea (subclass), Carinacea (infraclass).
Child taxa According to World Register of Marine Species: * Order Arbacioida (Gregory, 1900) -- 1 extant family and 2 fossils* Order Camarodonta (Jackson, 1912)** Infraorder Echinidea (Kroh & Smith, 2010) -- 5 extant families** Infraorder Temnopleuridea (Kroh & Smith, 2010) -- 2 extant families and 2 fossils* Order Stomopneustoida (Kroh & Smith, 2010) -- 2 extant families and 1 fossil* Family Glyphopneustidae  Smith & Wright, 1993 †Image:Arbacia lixula (oursin noir).JPG|Image:Paracentrotus lividus profil.JPG|Image:Black sea urchin (Temnopleurus toreumaticus).jpg|Image:S. variolaris.jpg|
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