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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
Synonymy list
| Year | Name and author |
|---|---|
| 1951 | Urasterina Spencer p. 122 |
| 1957 | Urasterina Lehmann p. 126 |
| 1965 | Urasterina Owen p. 564 |
| 1966 | Uractinina Spencer and Wright p. U71 |
| 1989 | Uractinida Blake p. 213 |
| 1993 | Uractinina Blake and Guensburg p. 110 |
| 2002 | Uractinida Sepkoski |
| 2007 | Uractinina Blake and Rozhnov p. 523 |
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If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
Subor. †Uractinina Spencer 1951
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Invalid names: Protarthrasteridae Spencer 1918 [empty]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| W. K. Spencer 1951 | With inconspicuous mouth-angle plates |
Measurements
No measurements are available
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| Source: c = class, p = phylum | |||||
| References: Aberhan et al. 2004, Aberhan 1992 | |||||
Collections
No collection or age range data are available