Genera and species from the “Paleobiology Database”

<==o †Soluta Jaekel, 1900 [Homoiostelea] (solutes)
   |?- †Belemnocystites
   |?-o †Castericystis Ubaghs & Robison, 1985
   |  |-- †C. sprinklei Ubaghs & Robison, 1988
   |  `-- †C. vali Ubaghs & Robison 1988
   |?- †Coleicarpus
   |?- †Dalejocystis
   |?- †Dehmicystis
   |?- †Dendrocystoides
   |?- †Girvanicystis
   |?- †Heckericystis
   |?- †Iowacystis
   |?- †Minervaecystis
   |?- †Myeinocystites
   |?- †Rutroclypeus
   |?- †Scalenocystites
   |?- †Syringocrinus
   `?-o †Dendrocystitidae Bassler, 1938
      |-- †Claritacarpus
      |-- †Dendrocystites
      `-- †Maennilia

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