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Biota (Life)
Eukaryote (Eukarya)
Podiata
Unikont (Unikonta)
Opisthokont (Opisthokonta)
Holozoa
Filozoa
Apoikozoa (Choanozoa)
Animal (Animalia)
Metazoa
Epitheliozoa
Eumetazoa
Bilateria
Deuterostome (Deuterostomia)
Echinodermata (Echinoderms)
Sea urchin (Echinoidea)
Euechinoidea
Irregularia
Atelostomata
Spatangoida

Brissidae (3460526)

Children (20 direct children, 156 direct and indirect children):

Brissopsis (tree size 36)

Brissus (tree size 22)

Meoma (tree size 8)

Rhynobrissus (tree size 8)

Plagiobrissus (tree size 16)

Cionobrissus (tree size 1)

Metalia (tree size 20)

Rhabdobrissus (tree size 3)

Brissalius (tree size 1)

Anametalia (tree size 3)

Neopneustes (tree size 1)

Taimanawa (tree size 6)

Anabrissus (tree size 1)

Brissopsinae (tree size 2)

Idiobryssus

Schizobrissus (tree size 5)

Peraspatangus (tree size 2)

Rojasia (tree size 1)

Deakia

Prometalia