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Checked: verified by a taxonomic editorIsocrinida 
AphiaID: 123095

Classification: Biota > Checked: verified by a taxonomic editorAnimalia (Kingdom) > Checked: verified by a taxonomic editorEchinodermata (Phylum) > Unreviewed: has not been verified by a taxonomic editorCrinozoa (Subphylum) > Unreviewed: has not been verified by a taxonomic editorCrinoidea (Class) > Checked: verified by a taxonomic editorArticulata (Subclass) > Checked: verified by a taxonomic editorIsocrinida (Order)
Authority Sieverts-Doreck, 1952
Status accepted
Rank Order
Parent Checked: verified by a taxonomic editorArticulata
Sources  basis of record Hess H (2011) Isocrinida. In: Hess, H., Messing, C.G., Ausich, W.I. (Eds.), Treatise on Invertebrate Paleontology, Part T, Echinodermata 2 Revised, Crinoidea, vol. 3. University of Kansas Press, Lawrence, Kansas, pp. 42–69. [details]

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taxa (2)

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 Suborder Checked: verified by a taxonomic editorIsocrinina
Suborder Checked: verified by a taxonomic editorPentacrinitina †
Environment marine, brackish, fresh, terrestrial
Fossil range recent + fossil
Link Unreviewed: has not been verified by a taxonomic editorTo GenBank  
From editor or global species database
Checked: verified by a taxonomic editorDiagnosis Articulata with cup cryptodicyclic, wider than high, low cone- or bowl-shaped; radial cavity wide, cup elements not extremely thick. Basals commonly much lower than radials. Radial articular facet directed outward, muscle fossae large but may be small in Lower Jurassic Pentacrinitina. Axial canals between brachials single. Columnal articula petaloid. [details]

Checked: verified by a taxonomic editorTaxonomy "Subdividing the Isocrinida has been highly controversial. Bourseau and Roux (1989) and Bourseau and others (1991) treated the isocrinids as a homogeneous group classified as the family Pentacrinidae d’Orbigny. They rejected the notion of 2 families, the uniquely fossil Pentacrinidae (with Seirocrinus and Pentacrinites) and the Isocrinidae (including the living representatives); thus, they also rejected a classification of Isocrinida into 2 suborders (Pentacrinitina and Isocrinina). The pentacrinitids, herein classified in the suborder Pentacrinitina, differ by some easily recognizable characters from isocrinids classified in the suborder Isocrinina, such as endotomous arm branching, highly cirriferous columns with laterally compressed cirri, and columnal articular facets with a distinctive pattern. Isocrinines, on the other hand, constitute a rather homogeneous group subdivided by relatively minor character differences." (Hess 2011, p. 42)  [details]
LSID urn:lsid:marinespecies.org:taxname:123095
Edit history
Date   action   by
2004-12-21 15:54:05Z  created  Hansson, Hans
2007-10-10 10:44:33Z  changed  Messing, Charles
2007-10-10 10:48:29Z  changed  Messing, Charles
2009-08-20 19:35:45Z  changed  Messing, Charles
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  Citation: Messing, C.; Hansson, H. (2009). Isocrinida. In: Messing, C. (2016). World List of Crinoidea. Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=123095 on 2017-02-23
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