After Parker, 1982 and

    Echinodermata (Spiny-skinned animals; piikkinahkaiset)
        †HelicoplacoideaHomalozoa [Mitrata, Calcichordata]BlastoideaCystoideaDiploporidaRhombifera
        Crinoidea (sea lilies and feather stars; merilijat)
            †EchmatocrineaEchmatocrinidaHemistreptocrinoideaHemistreptocrinidaDisparidaHypocrinidaCamerataDiplobathrida Moore & Laudon, 1943b
                †MonobathridaCladidaCyathocrininaFlexibiliaTaxocrinidaSagenocrinida
                Articulata (modern sealilies; nykymerililjat)
                    †UintacrinidaRoveacrinida
                    Millericrinida [incl. Bourgueticrinida]
                    Cyrtocrinida
                    Isocrinida
                    Comatulida (feather stars; vaeltajamerilijat)
        EleutherozoaEdrioasteroidea
            Holothuroidea (sea cucumbers; merimakkarat)
                Apodida
                Elasipodida (deep-sea sea cucumbers)
                Aspidochirotida (beche-de-mer, trepang, etc.)
                Molpadiida (rat-tailed sea cucumbers)
                Dentrochirotida (suspension-feeding sea cucumbers)
                Dactylochirotida (plated sea cucumbers, in partim)
            †Ophiocistioidea
            Asterozoa
                Concentricycloidea (sea daisies)
                Asteroidea de Blainville, 1830 (sea stars and cushion stars; meritähdet)
                    Paxillosida [incl. Platyasterida]
                    Valvatida [incl. Spinulosida in partim]
                    Velatida [incl. Spinulosida in partim]
                    Spinulosida s. s.
                    Brisingida
                    ForcipulataSomasteroidea Spencer, 1951
                †Eopentaroida Shackleton, 2005
                Ophiuroidea (brittle-stars and basket-stars; käärmetähdet)
                    Oegophiurida
                    Phrynophiurida
                    Ophiurida
            EchinozoaEdrioblastoidea
                Echinoidea (sea urchins and sand dollars; merisiilit)
                    Perischoechinoidea
                        Cidariida [Cidaroida]
                    Euechinoidea
                        Echinothuriida [Echinothurioida]
                        Diadematiida [Diadematoida]
                        Pediniida [Pedinoida]
                        Salenioida
                        Phymosomatoida
                        Arbacioida
                        Temnopleuroida
                        Echinoida
                    Gnathostomata
                        Holectypoida
                        Clypeasteroida
                    Atelostomata
                        Cassiduloida
                        Spatangoida

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