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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
Brissidina
Spatangidea (Spatangoidea)
Maretiidae

Nacospatangus (3457929)

Children (9 direct children, 9 direct and indirect children):

Nacospatangus alta

Nacospatangus gracilis

Nacospatangus oblonga

Nacospatangus interruptus

Nacospatangus depressus

Nacospatangus laevis

Nacospatangus tylota

Nacospatangus tylotus

Nacospatangus oblongus