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Icthyocrinus

Crinoidea

Taxonomy
Icthyocrinus was named by Conrad (1842) [Sepkoski's age data: S Wenl-l D Sieg]. It is the type genus of Icthyocrinidae, Icthyocrinacea.

It was corrected as Ichthyocrinus by Whitfield (1893), Wright and Toom (2017).

It was assigned to Cyathocrinidae by Whitfield (1893); to Icthyocrinidae by Ubaghs et al. (1978), Webster and Webster (2012); to Sagenocrinida by Sepkoski (2002), Wright and Toom (2017); and to Flexibilia by Wright (2017).

Synonymy list
YearName and author
1842Icthyocrinus Conrad
1893Ichthyocrinus Whitfield p. 35
1978Icthyocrinus Ubaghs et al. p. T790
2002Ichthyocrinus Sepkoski
2012Icthyocrinus Webster and Webster p. 1329
2017Icthyocrinus Wright
2017Ichthyocrinus Wright and Toom

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumBlastozoa
RankNameAuthor
classCrinoideaMiller 1821
subclassPentacrinoideaJaekel 1918
infraclassInadunata(Wachsmuth and Springer 1897)
—Cladida(Moore and Laudon 1943)
superorderFlexibilia(Zittel 1895)
genusIcthyocrinusConrad 1842

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. †Icthyocrinus Conrad 1842
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Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: high Mg calcitec
Ontogeny: accretion, addition of partsp
Environment: marinep
Locomotion: stationaryg
Attached: yesg
Life habit: upper-level epifaunalg
Diet: suspension feederg
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Comments: LIFE HISTORY: Stem lengths of 15-23 cm according to Brett (1984), therefore upper level epifaunal.g
Created: 2009-10-09 11:54:58
Modified: 2009-10-09 13:54:58
Source: g = genus, c = class, p = phylum
References: Hendy et al. 2009, Kiessling 2004, Aberhan 1992

Age range: base of the Llandovery to the top of the Early/Lower Emsian or 443.10000 to 399.50000 Ma

Collections (26 total)


Time interval Ma Country or state Original ID and collection number
Llandovery443.1 - 432.9USA (New York) I. sp. (463)
Llandovery - Wenlock443.1 - 426.7USA (New York) I. laevis (26801)
Llandovery - Wenlock443.1 - 426.7USA (Iowa) I. sp. (13356)
Silurian - Wenlock443.1 - 426.7USA (Illinois) I. subangularis (13355)
Silurian443.1 - 419.62USA (Oklahoma) I. sp. (528)
Wenlock432.9 - 426.7USA (Indiana) I. corbis (26778) I. sp. (26771) I. subangularis (26787)
Wenlock432.9 - 426.7Canada (Ontario) I. laevis (26855)
Wenlock432.9 - 426.7United Kingdom (England) I. sp. (79893)
Wenlock432.9 - 426.7USA (New York) I. conoideus, I. laevis, I. subangulatus (13338) I. laevis (12936 13050 13051 13052 13053 26854) I. sp. (541)
Wenlock - Ludlow432.9 - 422.7USA (Illinois) I. sp. (26705) I. subangularis (26770)
Wenlock - Ludlow432.9 - 422.7USA (Iowa) I. sp. (26716)
Ludlow426.7 - 422.7USA (Oklahoma) I. corbis (26823)
Lochkovian419.62 - 413.02Czechia I. sp. (94439)
Lochkovian419.62 - 413.02Canada (Quebec) I. sp. (654)
Pragian413.02 - 410.62Czechia I. bohemicus, I. globulus (14134)
Early/Lower Emsian410.62 - 399.5Czechia I. sp. (14137)