WoRMS source details
Cenocrinus Thomson, 1864 (basis of record)
Cenocrinus asterius (Linnaeus, 1767) (additional source)
Diplocrininae Roux, 1981 (basis of record)
Isocrinida (basis of record)
Isocrinina accepted as Isocrinida (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 Klikushin, 1977 accepted as Isselicrininae Klikushin, 1977 (basis of record)
Metacrininae Klikushin, 1977 (basis of record)
Saracrinus A. H. Clark, 1923 (basis of record)
Diplocrininae with bowl-shaped cup. Basals rather small, separated on surface of cup. Arms divided at primibrachial ... [details]
Isselicrinidae with brachitaxes typically with fewer than 5 brachials beyond secundaxil (more in Cenocrinus). ... [details]
Isocrininae with 10 arms. Symmorphy between secundibrachials 3 and 4 and more distally. [details]
Articulata with cup cryptodicyclic, wider than high, low cone- or bowl-shaped; radial cavity wide, cup elements not ... [details]
Isocrinida with arms long, slender, branching mostly isotomous. Facets of brachials with well-developed muscle ... [details]
Isocrinida with arms long, slender; branching mostly isotomous. Facets of brachials with well-developed muscle ... [details]
Isocrinus with straight cryptosyzygy between secundibrachials 3-4. Internodes long, with as many as 20 columnals. [details]
Isocrinina with cryptosyzygy between primibrachials 1-2 and secundibrachials 1-2; in Metacrininae muscular ... [details]
Isocrinidae with base of crown conical, 10 arms in N. naresianus or more than 10 arms in N. blakei and N. ... [details]
Metacrininae with typically 4 primibrachials (range 3-6); only primibrachials 1-2 united by cryptosyzygy. [details]
Cainocrinidae with arms divided at primibrachial 2 and further divided at variable intervals of 1-6 brachials. ... [details]
"Subdividing the Isocrinida has been highly controversial. Bourseau and Roux (1989) and Bourseau and others (1991) ... [details]