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Hadranderaster simplex
Taxonomy
Oreaster simplex was named by Geinitz (1871). It is not extant. Its type specimen is Probably at the Museum of Dresden.
It was recombined as Hadranderaster simplex by Lehner (1937), Spencer and Wright (1966), Villier et al. (2004) and Breton and Néraudeau (2008).
It was recombined as Hadranderaster simplex by Lehner (1937), Spencer and Wright (1966), Villier et al. (2004) and Breton and Néraudeau (2008).
Synonyms
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Synonymy list
Year | Name and author |
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1871 | Oreaster perforatus Geinitz p. 90 figs. pl. 21, fig. 21-22; pl. 23, fig. 7 |
1871 | Oreaster simplex Geinitz p. 90 figs. pl. 21, fig. 15-20 |
1876 | Oreaster simplex Quenstedt p. 100 figs. pl. 94, fig. 7 |
1905 | Pentaceros abbreviatus Spencer pp. 86-87 figs. pl. 24, fig. 1 |
1907 | Hadranderaster abbreviatus Spencer pp. 114, 118 figs. fig. 6, 22 |
1937 | Hadranderaster simplex Lehner p. 172 figs. fig. 2 |
1966 | Hadranderaster simplex Spencer and Wright p. U55 figs. fig. 51.4 |
1993 | Hadranderaster abbreviatus Lewis p. 54 |
2004 | Hadranderaster simplex Villier et al. p. 39 |
2008 | Hadranderaster simplex Breton and Néraudeau pp. 3223-325 figs. figs. 2.1, 2.3a-c, 4.1 |
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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.
†Hadranderaster simplex Geinitz 1871
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Invalid names: Oreaster perforatus Geinitz 1871 [synonym], Pentaceros abbreviatus Spencer 1905 [synonym]
Diagnosis
Reference | Diagnosis | |
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W. K. Spencer 1905 (Pentaceros abbreviatus) | Body of medium size. Arms moderately produced, but their breath making them appear stumpy, rounded at the extremities, and hemispherical in cross section. Five series of dorsal ossicles enter their base. Of these the radialia and adradialia persist throughout the length of the arm. A few small intermarginal are present. |