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Arkacrinus constrictus

Crinoidea

Taxonomy
Arkacrinus constrictus was named by Moore and Strimple (1973). It is not extant. Its type specimen is SUI 33182 (dorsal cup). Its type locality is Flat Rock Creek (Loc. 10), which is in a Morrowan marine limestone/shale in the Bloyd Formation of Oklahoma.

Synonymy list
YearName and author
1973Arkacrinus constrictus Moore and Strimple

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumBlastozoa
classCrinoideaMiller 1821
RankNameAuthor
subclassPentacrinoideaJaekel 1918
infraclassInadunata(Wachsmuth and Springer 1897)
—Cladida(Moore and Laudon 1943)
—Eucladida
—ArticuliformesWright 2017
genusArkacrinusKnapp 1969
speciesconstrictus

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.

†Arkacrinus constrictus Moore and Strimple 1973
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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: stationarysubc
Attached: yessubc
Life habit: intermediate-level epifaunalsubc
Diet: suspension feedersubc
Vision: blindc
Dispersal: waterp
Dispersal 2: planktonicp
Created: 2009-10-09 11:50:31
Modified: 2009-10-09 13:50:31
Source: subc = subclass, c = class, p = phylum
References: Kiessling 2004, Hendy et al. 2009, Aberhan 1992

Age range: Morrowan or 323.40000 to 318.60000 Ma

Collections: one only


Time interval Ma Country or state Original ID and collection number
Morrowan323.4 - 318.6USA (Oklahoma) Arkacrinus constrictus (type locality: 128647)