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Urasterellidae
Taxonomy
Urasterellidae was named by Schuchert (1914). It is not extant. Its type is Urasterella. It was considered monophyletic by Dean Shackleton (2005).
It was reranked as the subfamily Urasterellinae by Dean Shackleton (2005).
It was assigned to Urasterellacea by Schuchert (1915); to Asteroidea by Spencer (1918); to Urasterina by Lehmann (1957) and Owen (1965); to Uractinida by Blake (1989); to Palasteriscidae by Dean Shackleton (2005); to Uractinina by Spencer and Wright (1966) and Blake and Rozhnov (2007); to Asteroidea by Jell and Theron (1999) and Blake et al. (2016); and to Hadrosida by Blake (2018), Blake and Koniecki (2020) and Müller and Hahn (2022).
It was reranked as the subfamily Urasterellinae by Dean Shackleton (2005).
It was assigned to Urasterellacea by Schuchert (1915); to Asteroidea by Spencer (1918); to Urasterina by Lehmann (1957) and Owen (1965); to Uractinida by Blake (1989); to Palasteriscidae by Dean Shackleton (2005); to Uractinina by Spencer and Wright (1966) and Blake and Rozhnov (2007); to Asteroidea by Jell and Theron (1999) and Blake et al. (2016); and to Hadrosida by Blake (2018), Blake and Koniecki (2020) and Müller and Hahn (2022).
Synonymy list
| Year | Name and author |
|---|---|
| 1914 | Urasterellidae Schuchert |
| 1915 | Urasterellidae Schuchert pp. 163, 172 |
| 1918 | Urasterellidae Spencer pp. 127-135 |
| 1957 | Urasterellidae Lehmann pp. 126-127 |
| 1965 | Urasterellidae Owen p. 565 |
| 1966 | Urasterellidae Spencer and Wright p. U71 |
| 1989 | Urasterellidae Blake p. 213 |
| 1999 | Urasterellidae Jell and Theron p. 151 |
| 2005 | Urasterellinae Dean Shackleton p. 97 |
| 2007 | Urasterellidae Blake and Rozhnov p. 523 |
| 2016 | Urasterellidae Blake et al. p. 174 |
| 2018 | Urasterellidae Blake p. 35 |
| 2020 | Urasterellidae Blake and Koniecki p. 8 |
| 2022 | Urasterellidae Müller and Hahn p. 10 |
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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.
Fm. †Urasterellidae Schuchert 1914
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G. †Anthroosasterias Blake 2017
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†Anthroosasterias huxleyi Billings 1865
†Anthroosasterias stibareus Blake 2017
G. †Bohemaster Jaekel 1923
G. †Pegoasterella Blake and Koniecki 2020
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†Pegoasterella pompom Blake and Koniecki 2020
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Invalid names: Promopalaeaster wilsoni Raymond 1912 [synonym]
G. †Salteraster Stürtz 1893
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†Salteraster acuminatus Simonovitsch 1871
†Salteraster asperrimus Salter 1857
†Salteraster biradialis Withers and Keble 1934
†Salteraster coronella Salter 1857
†Salteraster imbricatus Salter 1865
†Salteraster selwyni McCoy 1874
G. †Ulrichaster Spencer 1950
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†Ulrichaster macrodentatus Jell and Theron 1999
†Ulrichaster ulrichi Schuchert 1915
G. †Urasterella McCoy 1851
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†Urasterella biradialis Withers and Keble 1934
†Urasterella constellata Thorent 1839
†Urasterella creswelli Withers and Keble 1934
†Urasterella gutterfordensis Spencer 1918
†Urasterella inyoensis Stauffer 1930
†Urasterella montana Shchurovskiy 1874
†Urasterella pulchella Billings 1857
†Urasterella ruthveni Forbes 1848
†Urasterella ruthveni leintwardinensis Spencer 1918
†Urasterella thraivensis Spencer 1918
†Urasterella verruculosa Lehmann 1957
Invalid names: Palasteracanthion Stürtz 1886 [synonym], Phillipaster Spencer 1950 [synonym], Protasteracanthion Stürtz 1886 [synonym], Roemeraster Stürtz 1886 [synonym]
Diagnosis
| Reference | Diagnosis | |
|---|---|---|
| J. Dean Shackleton 2005 | Loss of aboral ambulacral ridge; ambulacral cross-section rectangular (flat aboral ambulacral profile); loss of adambulacral spines; loss of inferomarginals aboral with respect to adambulacrals. |