the root (no rank)
Eukaryota (domain)
Metazoa (kingdom)
Echinodermata (phylum)
Echinozoa (superclass)
Holothurioidea (class)
Aspidochirotacea (subclass)
Aspidochirotida (order)
Holothuriidae (family)
[hide inferior taxa]
Cucumaria echinata (species)
Holothuria glaberrima (species)
Holothuria tubulosa (species)