Echinodermata - families

	Mikko's Phylogeny Archive	Main Groups of Organisms
	Echinodermata - families

<==o ECHINODERMATA (piikkinahkaiset)
   |-- †CYSTOIDEA
   |-- †BLASTOIDEA
   `--+--o CRINOZOA 
      |  `--o CRINOIDEA (merililjat)
      |     |-- †Disparida
      |     `--+-- †"Four-circlet crinoids"
      |        `--+-- †Camerata
      |           `--+-- †Flexibilia
      |              `--+-- Articulata (nykymerililjat)
      |                 `-- †Cladida
      `--o ELEUTHEROZOA
         |--o †EDRIOASTEROIDEA
         `--+?-o HOLOTHUROIDEA (merimakkarat)
            |  |-- Dendrochirotacea 
            |  |-- Aspidochirotacea 
            |  `-- Apodacea 
            `--+--o ASTEROZOA
               |  `--o ASTEROIDEA (meritähdet)
               |     |-- Platyasterida
               |     |-- Paxillosida
               |     |-- Valvatida
               |     |-- Spinulosida
               |     `-- Forcipulatida
               |?- Concentrocycloidea
               `--+--+?-o †OPHIOCISTIOIDEA
                  |  `--o ECHINOIDEA (merisiilit)
                  |     |-- Perischoechinoidea 
                  |     `--o EUECHINOIDEA 
                  |        |-- Diadematacea 
                  |        |-- Echinaceae 
                  |        |--o GNATHOSTOMATA [ICZN rules article 1 b4]
                  |        |  |--  Holectypoida 
                  |        |  `--  Clypeasteroida 
                  |        `-- ATELOSTOMATA
                  `?- OPHIUROIDEA (käärmetähdet)

Reference(s):

Conway Morris, S., 1993: The fossil record and early evolution of the Metazoa. –Nature, vol. 361, 21 January, pp. 219-225 iNet: Tree of Life --http://tolweb.org/tree/

Parker, S. P. (ed.), 1982: Synopsis and classification of living organisms. Vols. 1 & 2
–McGrew-Hill Book Company