WoRMS source details

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. 42–69.
167112
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
42–69
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2013-03-29 22:54:20Z
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Cainocrinidae Simms, 1988 (basis of record)
Cenocrinus Thomson, 1864 (basis of record)
Cenocrinus asterius (Linnaeus, 1767) (additional source)
Diplocrininae Roux, 1981 (basis of record)
Isocrinida (basis of record)
Isocrinina (basis of record)
Isocrinus von Meyer in Agassiz, 1836 † (basis of record)
Isocrinus (Chladocrinus) (Agassiz, 1836) † (basis of record)
Isocrinus (Isocrinus) von Meyer in Agassiz, 1836 † (basis of record)
Isselicrinidae Klikushkin, 1977 (basis of record)
Metacrininae Klikushkin, 1977 (basis of record)
Saracrinus AH Clark, 1923 (basis of record)
 Diagnosis

Isocrinus with straight cryptosyzygy between secundibrachials 3-4. Internodes long, with as many as 20 columnals. [details]

 Diagnosis
 for Isocrinida

Articulata with cup cryptodicyclic, wider than high, low cone- or bowl-shaped; radial cavity wide, cup elements not ... [details]

 Diagnosis

Cainocrinidae with arms divided at primibrachial 2 and further divided at variable intervals of 1-6 brachials. ... [details]

 Diagnosis

Diplocrininae with bowl-shaped cup. Basals rather small, separated on surface of cup. Arms divided at primibrachial ... [details]

 Diagnosis
 for Isocrinina

Isocrinida with arms long, slender, branching mostly isotomous. Facets of brachials with well-developed muscle ... [details]

 Diagnosis

Isocrinida with arms long, slender; branching mostly isotomous. Facets of brachials with well-developed muscle ... [details]

 Diagnosis

Isocrinidae with base of crown conical, commonly more than 10 arms. Secundibrachials 3-4 united by symmorphy in ... [details]

 Diagnosis

Isocrinina with cryptosyzygy between primibrachials 1-2 and secundibrachials 1-2; in Metacrininae muscular ... [details]

 Diagnosis

Isocrininae with 10 arms. Symmorphy between secundibrachials 3 and 4 and more distally. [details]

 Diagnosis

Isselicrinidae with brachitaxes typically with fewer than 5 brachials beyond secundaxil (more in Cenocrinus). ... [details]

 Diagnosis

Metacrininae with typically 4 primibrachials (range 3-6); only primibrachials 1-2 united by cryptosyzygy. [details]

 Diagnosis

Same as genus. [details]

 Taxonomy
 for Isocrinida

"Subdividing the Isocrinida has been highly controversial. Bourseau and Roux (1989) and Bourseau and others (1991) ... [details]

 Taxonomy

See taxonomic note under Isocrinida. [details]