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Hemicidaris
Taxonomy
Hemicidaris was named by Agassiz (1838) [Sepkoski's age data: J Plie-u K Apti Sepkoski's reference number: 956].
It was assigned to Hemicidaridae by Clark and Twitchell (1915) and Fell and Pawson (1966); and to Hemicidaroida by Sepkoski (2002).
It was assigned to Hemicidaridae by Clark and Twitchell (1915) and Fell and Pawson (1966); and to Hemicidaroida by Sepkoski (2002).
Synonymy list
| Year | Name and author |
|---|---|
| 1838 | Hemicidaris Agassiz p. 3 |
| 1915 | Hemicidaris Clark and Twitchell p. 31 |
| 1966 | Hemicidaris Fell and Pawson p. U381 |
| 2002 | Hemicidaris Sepkoski |
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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. †Hemicidaris Agassiz 1838
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†Hemicidaris abyssinica Blanford 1870
†Hemicidaris alpina Agassiz 1840
†Hemicidaris confluens M'Coy 1848
†Hemicidaris granulosa Wright 1851
†Hemicidaris icaunensis Cotteau 1849
†Hemicidaris intermedia Fleming 1828
†Hemicidaris intumescens Clark 1893
†Hemicidaris koechlini Cotteau 1862
†Hemicidaris zignoi Cotteau 1867
Diagnosis
No diagnoses are available