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Urasterella
Taxonomy
Urasterella was named by McCoy (1851) [Sepkoski's age data: O Llde C Mosc Sepkoski's reference number: 248]. Its type is Uraster ruthveni. It is the type genus of Urasterellidae.
It was assigned to Uractinida by Sepkoski (2002); to Urasterellinae by Dean Shackleton (2005); and to Urasterellidae by Schuchert (1915), Spencer (1918), Withers and Keble (1934), Lehmann (1957), Owen (1965), Spencer and Wright (1966), Blake and Rozhnov (2007), Blake (2018) and Blake and Koniecki (2020).
It was assigned to Uractinida by Sepkoski (2002); to Urasterellinae by Dean Shackleton (2005); and to Urasterellidae by Schuchert (1915), Spencer (1918), Withers and Keble (1934), Lehmann (1957), Owen (1965), Spencer and Wright (1966), Blake and Rozhnov (2007), Blake (2018) and Blake and Koniecki (2020).
Synonyms
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Synonymy list
Year | Name and author |
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1851 | Urasterella McCoy p. 59 |
1886 | Roemeraster Stürtz p. 85 |
1886 | Protasteracanthion Stürtz p. 86 |
1886 | Palasteracanthion Stürtz p. 153 |
1915 | Urasterella Schuchert pp. 173-178 |
1918 | Urasterella Spencer pp. 135-137 |
1934 | Urasterella Withers and Keble p. 234 |
1950 | Phillipaster Spencer |
1957 | Urasterella Lehmann pp. 127-128 |
1957 | Protasteracanthion Lehmann pp. 147-148 |
1965 | Urasterella Owen p. 565 |
1965 | Phillipsaster Owen p. 566 |
1966 | Phillipsaster Spencer and Wright p. U71 |
1966 | Urasterella Spencer and Wright p. U71 |
2002 | Phillipaster Sepkoski |
2002 | Urasterella Sepkoski |
2005 | Urasterella Dean Shackleton p. 99 |
2007 | Urasterella Blake and Rozhnov p. 524 |
2018 | Urasterella Blake p. 35 |
2020 | Urasterella Blake and Koniecki p. 12 figs. 1.1-1.4 |
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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.
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 | |
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J. Dean Shackleton 2005 | Adjacent adambulacrals overlap; inferomarginals of paxillate morphology. |