Hemiasterina

Cladus: Eukaryota
Supergroup: Unikonta
Cladus: Opisthokonta
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Deuterostomia
Phylum: Echinodermata
Subphylum: Eleutherozoa
Superclassis: Cryptosyringida
Classis: Echinoidea
Subclassis: Euechinoidea
Superordo: Atelostomata
Ordo: Spatangoida
Subordo: Hemiasterina
Familiae: Aeropsidae - Hemiasteridae - Palaeostomatidae - Pericosmidae - Schizasteridae

Biology Encyclopedia

Echinodermata Images

Source: Wikipedia, Wikispecies: All text is available under the terms of the GNU Free Documentation License