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Hemistreptocrinoidea

Crinoidea

Discussion

Listed in 1978 Treatise (T759) as a "new class of crinoid" so presumably a subclass

Taxonomy
Hemistreptocrinoidea was named by Arendt (1976).

It was assigned to Crinoidea by Arendt (1976).

Synonymy list
YearName and author
1976Hemistreptocrinoidea Arendt

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
RankNameAuthor
phylumEchinodermata
subphylumBlastozoa
classCrinoideaMiller 1821
subclassHemistreptocrinoideaArendt 1976
subclassHemistreptocrinoideaArendt 1976

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.

Subcl. †Hemistreptocrinoidea Arendt 1976
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Or. †Hemistreptocrinida Arendt 1976
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Fm. †Hemistreptocrinidae Arendt 1976
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G. †Hemistreptocrinus Arendt 1976
G. †Nonparactocrinus Arendt 1976
G. †Tetractocrinus Jaekel 1918
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Invalid names: Tetractocrinus Jaekel 1918 [objective synonym]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: stationaryc
Attached: yesc
Life habit: upper-level epifaunalc
Diet: suspension feederc
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2004-02-28 12:31:37
Modified: 2010-02-10 07:13:41
Source: c = class, p = phylum
References: Aberhan 1992, Kiessling 2004
Collections
No collection or age range data are available