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Hemicidaroida
Taxonomy
Hemicidarina was named by Beurlen (1937).
It was reranked as the order Hemicidaroida by Durham and Melville (1957), Fell and Pawson (1966), Smith (1991), Sepkoski (2002); it was reranked as the order Hemicidaroidea by Berndt (2003).
It was assigned to Echinacea by Durham and Melville (1957), Fell and Pawson (1966); to Stirodonta by Smith (1991); and to Echinoidea by Sepkoski (2002), Berndt (2003).
It was reranked as the order Hemicidaroida by Durham and Melville (1957), Fell and Pawson (1966), Smith (1991), Sepkoski (2002); it was reranked as the order Hemicidaroidea by Berndt (2003).
It was assigned to Echinacea by Durham and Melville (1957), Fell and Pawson (1966); to Stirodonta by Smith (1991); and to Echinoidea by Sepkoski (2002), Berndt (2003).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1957 | Hemicidaroida Durham and Melville p. 254 |
| 1966 | Hemicidaroida Fell and Pawson p. U381 |
| 1991 | Hemicidaroida Smith p. 22 |
| 2002 | Hemicidaroida Sepkoski |
| 2003 | Hemicidaroidea Berndt p. 78 |
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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.
Or. †Hemicidaroida Beurlen 1937
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G. †Allomma
G. †Colpotiara
G. †Micropedina Cotteau 1866
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†Micropedina gongilensis Brighton 1925
†Micropedina olisiponensis Forbes in Sharpe 1850
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Invalid names: Codiopsis cotteaui Coquand 1862 [synonym], Micropedina bipatellis Gregory 1906 [synonym]
G. †Trochodiadema
Diagnosis
No diagnoses are available