|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Asteroidea - Platyasterida
It was reranked as the order Uractinida by Blake (1989) and Sepkoski (2002); it was corrected as Uractinina by Spencer and Wright (1966), Blake and Guensburg (1993) and Blake and Rozhnov (2007).
It was assigned to Hemizonida by Spencer (1951), Lehmann (1957) and Owen (1965); to Forcipulatida by Spencer and Wright (1966); to Asteroidea by Blake (1989), Blake and Guensburg (1993) and Sepkoski (2002); and to Platyasterida by Blake and Rozhnov (2007).
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