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Hexacrinitacea
Taxonomy
Hexacrinitacea was named by Wachsmuth and Springer (1885). Its type is Hexacrinidae.
It was corrected as Hexacrinitoidea by Webster et al. (1999), Webster (2012), Webster and Webster (2012).
It was assigned to Monobathrida by Webster et al. (1999); and to Compsocrinina by Ubaghs et al. (1978), Webster and Lane (1987), Webster (2012), Webster and Webster (2012).
It was corrected as Hexacrinitoidea by Webster et al. (1999), Webster (2012), Webster and Webster (2012).
It was assigned to Monobathrida by Webster et al. (1999); and to Compsocrinina by Ubaghs et al. (1978), Webster and Lane (1987), Webster (2012), Webster and Webster (2012).
Subtaxa
Synonymy list
| Year | Name and author |
|---|---|
| 1885 | Hexacrinitacea Wachsmuth and Springer |
| 1978 | Hexacrinitacea Ubaghs et al. p. T473 |
| 1987 | Hexacrinitacea Webster and Lane p. 9 |
| 1999 | Hexacrinitoidea Webster et al. p. 465 |
| 2012 | Hexacrinitoidea Webster p. 66 |
| 2012 | Hexacrinitoidea Webster and Webster |
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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.
Superfm. †Hexacrinitacea Wachsmuth and Springer 1885
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Fm. †Hexacrinitidae Wachsmuth and Springer 1885
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G. †Platyhexacrinus Schmidt 1913
G. †Prohexacrinus Yakovlev 1946
G. †Wacrinus Jell and Jell 1999
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†Wacrinus caseyensis Jell and Jell 1999
†Wacrinus millardensis Jell and Jell 1999
Fm. †Parahexacrinidae Shevchenko 1967
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G. †Agathocrinus Stoddart 1876
G. †Amonohexacrinus Schevchenko 1967
G. †Parahexacrinus Shevchenko 1967
Diagnosis
No diagnoses are available