Leptognathina
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![](http://upload.wikimedia.org/wikipedia/commons/thumb/3/35/Anseropoda_placenta.jpg/220px-Anseropoda_placenta.jpg)
Taxonavigation
[edit]Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Echinodermata
Subphylum: Eleutherozoa
Superclassis: Asterozoa
Classis: Asteroidea
Ordo: Spinulosida
Subordo: Leptognathina
Familiae: Asterinidae - Echinasteridae - Ganeriidae - Metrodiridae - Mithrodiidae - Poraniidae - Valvasteridae