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Arkacrinus dubius

Crinoidea - Dendrocrinida - Arkacrinidae

Taxonomy
Delocrinus dubius was named by Mather (1915). It is not extant. Its type specimen is University of Chicago Walker Museum 16661.

It was recombined as Arkacrinus dubius by Mather (1915), Moore and Strimple (1973).

Synonymy list
YearName and author
1915Arkacrinus dubius Mather
1973Arkacrinus dubius Moore and Strimple

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RankNameAuthor
kingdomAnimalia()
—Bilateria
—EubilateriaAx 1987
—Deuterostomia
—Ambulacraria
phylumEchinodermata
subphylumBlastozoa
classCrinoideaMiller 1821
subclassPentacrinoideaJaekel 1918
RankNameAuthor
infraclassInadunata(Wachsmuth and Springer 1897)
—Cladida(Moore and Laudon 1943)
—Eucladida
superorderCyathoformes
orderDendrocrinida
superfamilyErisocrinoidea(Wachsmuth and Springer 1886)
familyArkacrinidaeKnapp 1969
genusArkacrinusKnapp 1969
speciesdubius(Mather 1915)

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 dubius Mather 1915
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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: Aberhan 1992, Hendy et al. 2009, Kiessling 2004

Age range: base of the Serpukhovian to the top of the Morrowan or 330.30000 to 318.60000 Ma

Collections (15 total)


Time interval Ma Country or state Original ID and collection number
Serpukhovian330.3 - 323.4USA (Oklahoma) Delocrinus dubius (5611)
Morrowan323.4 - 318.6USA (Arkansas) Arkacrinus dubius (128913 128914 128978 128979 128985 128992) Delocrinus dubius (90789 90790 90794)
Morrowan323.4 - 318.6USA (Oklahoma) Arkacrinus dubius (128647 128679 128688) Arkacrinus dubius, Delocrinus dubius (90795) Delocrinus dubius (90796)