| Type | Diagnosis | ||||||
| Language | English | ||||||
| ISO 639-3 | eng | ||||||
| Note | Antedon with arms to ~50 mm long. Cirri to 40, of 16-18 cirrals; length to ~25% arm length; longer proximal cirrals with L/W ratio 2.0-2.5; distal cirrals distinctly longer than wide and only slightly wider than proximal cirrals. P1 with 20-25 segments, at least twice as long as P2; P2 and P3 similar. to P3 ; there are often calcareous patches in the perisome between the division series. | ||||||
| Source | Clark AH, Clark AM (1967) A monograph of the existing crinoids 1(5). Bulletin of the United States National Museum (82):1-860. | ||||||
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