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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) and Blake and Rozhnov (2007); it was reranked as the order Uractinida by Blake (1989) and Sepkoski (2002); it was considered an invalid subgroup of Asteroidea by Blake (2018).
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).
It was corrected as Uractinina by Spencer and Wright (1966), Blake and Guensburg (1993) and Blake and Rozhnov (2007); it was reranked as the order Uractinida by Blake (1989) and Sepkoski (2002); it was considered an invalid subgroup of Asteroidea by Blake (2018).
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).
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 | |
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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 1992, Aberhan et al. 2004 |
Collections
No collection or age range data are available