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Uractinina (disused)
Taxonomy
Urasterina was named by Spencer (1951). It is not extant.
It was corrected as Uractinina by Spencer and Wright (1966), Blake and Guensburg (1993), Blake and Rozhnov (2007); it was reranked as the order Uractinida by Blake (1989), Sepkoski (2002); it was considered an invalid subgroup of Asteroidea by Blake (2018).
It was assigned to Hemizonida by Spencer (1951), Lehmann (1957), Owen (1965); to Forcipulatida by Spencer and Wright (1966); to Asteroidea by Blake (1989), Blake and Guensburg (1993), Sepkoski (2002); and to Platyasterida by Blake and Rozhnov (2007).
It was corrected as Uractinina by Spencer and Wright (1966), Blake and Guensburg (1993), Blake and Rozhnov (2007); it was reranked as the order Uractinida by Blake (1989), Sepkoski (2002); it was considered an invalid subgroup of Asteroidea by Blake (2018).
It was assigned to Hemizonida by Spencer (1951), Lehmann (1957), Owen (1965); to Forcipulatida by Spencer and Wright (1966); to Asteroidea by Blake (1989), Blake and Guensburg (1993), Sepkoski (2002); and to Platyasterida by Blake and Rozhnov (2007).
Subtaxa