Crinoidea - Cladida - Botryocrinidae

Parent taxon: Botryocrinidae according to G. C. McIntosh 1984

Sister taxa: Barycrinus, Botryocrinus, Cosmocrinus, Mastigocrinus, Situlacrinus

Subtaxa: Costalocrinus conkini, Costalocrinus consolidatus, Costalocrinus cornutus, Costalocrinus dilatatus, Costalocrinus helenae, Costalocrinus rex, Costalocrinus sentosus

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Type: Costalocrinus dilatatus

Ecology: stationary intermediate-level epifaunal suspension feeder