Isocrinida is an order of sea lilies which contains four extant families.
Characteristics
Members of this order are characterised by having a "heteromorphic" stalk; the stalk consists of a series of nodes with cirri, interspersed by several nodes without cirri. There are additionally a whorl of cirri at the base on which the animal perches. The calyx is a shallow cup consisting of five basals and five radials.
Families
* Suborder
Isocrinina Sieverts-Doreck, 1952
** family
Cainocrinidae
''Cainocrinidae'' is a family of echinoderms belonging to the order Isocrinida
Isocrinida is an order of sea lilies which contains four extant families.
Characteristics
Members of this order are characterised by having a "heteromorphic" stalk; ...
Simms, 1988 -- 1 genus (1 species)
** family
Isocrinidae
Isocrinidae is one of four extant families of crinoids in the order Isocrinida.Messing, C. (2014)Isocrinidae Gislén, 1924 In: Messing, C. (2014) World List of Crinoidea. Accessed through: World Register of Marine Species
Genera
*'' Hypalocrinu ...
Gislén, 1924 -- 3 genus (3 species)
** family
Isselicrinidae
Isselicrinidae is one of four extant families of crinoids in the order Isocrinida.
Subfamilies and genera
* subfamily Diplocrininae Roux, 1981
** genus ''Cenocrinus'' Thomson, 1864 -- 1 species
** genus ''Endoxocrinus'' AH Clark, 1908 -- 5 sp ...
Klikushkin, 1977 -- 4 genus (18 species)
** family
Proisocrinidae
''Proisocrinus ruberrimus'' is a species of crinoids that is in the monotypic genus ''Proisocrinus''. The genus is in the monotypic family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) ...
Rasmussen, 1978 -- 1 genus (1 species)
* Suborder
Pentacrinitina Gray, 1842 †
** family
Pentacrinitidae Gray, 1842 †
Image:Neocrinus decorus.jpg, ''Neocrinus decorus
''Neocrinus decorus'' is a species of crinoid in the family Isocrinidae. ''Neocrinus decorus'' has been around for 23.03 million years, and lives at depths from 154 to 1219 meters near the Caribbean of Venezuela, living on hard substrate.
Synon ...
'' (Isocrinidae
Isocrinidae is one of four extant families of crinoids in the order Isocrinida.Messing, C. (2014)Isocrinidae Gislén, 1924 In: Messing, C. (2014) World List of Crinoidea. Accessed through: World Register of Marine Species
Genera
*'' Hypalocrinu ...
)
Image:Metacrinus rotundus by OpenCage.JPG, ''Metacrinus rotundus
''Metacrinus rotundus'', the Japanese sea lily, is a marine invertebrate, a species of stalked crinoid in the family Isselicrinidae. It is a species found off the west coast of Japan, and is living near the edge of the continental shelf, around ...
'' (Isselicrinidae
Isselicrinidae is one of four extant families of crinoids in the order Isocrinida.
Subfamilies and genera
* subfamily Diplocrininae Roux, 1981
** genus ''Cenocrinus'' Thomson, 1864 -- 1 species
** genus ''Endoxocrinus'' AH Clark, 1908 -- 5 sp ...
)
Image:Proisocrinus ruberrimus.jpg, ''Proisocrinus ruberrimus
''Proisocrinus ruberrimus'' is a species of crinoids that is in the monotypic genus ''Proisocrinus''. The genus is in the monotypic family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) ...
'' (Proisocrinidae
''Proisocrinus ruberrimus'' is a species of crinoids that is in the monotypic genus ''Proisocrinus''. The genus is in the monotypic family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) ...
)
Image:Endoxocrinus.jpg, ''Endoxocrinus
''Endoxocrinus'' is a genus of echinoderms belonging to the family Pentacrinitidae.
The species of this genus are found in Western Europe, America, Southeastern Asia and Australia.
Species:
*'' Endoxocrinus alternicirrus''
*'' Endoxocrinus mac ...
sp.''
Image:Endoxocrinus parrae.jpg, ''Endoxocrinus parrae
''Endoxocrinus parrae'' is a species of stalked crinoids of the family Isselicrinidae. It is the most commonly found isocrinine species in west Atlantic Ocean.
Morphology
As members of the order Isocrinida, ''E. parrae'' possess a heteromorphic ...
''
Image:Britannica Echinoderma 14.jpg, '' Isocrinus asteria''
References
*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.
Articulata (Crinoidea)
Anisian first appearances
Extant Middle Triassic first appearances
Echinoderm orders
{{crinoidea-stub