Taxonomy summary
Only current list
Excluding species
Eukaryota
>
Metazoa
>
Echinodermata
Class
Order
Family
Genus
Species
Asteroidea
8
43
251
1240
Crinoidea
6
39
133
442
Echinoidea
16
54
164
940
Holothuroidea
6
26
133
1056
Ophiuroidea
5
22
312
2375
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