Diagnosis

English

eng

Antedon incommoda with centrodorsal discoidal, with aboral pole quite flat although variable in width and with cirrus sockets sometimes encroaching. Cirri 20-35, of up to 13 (rarely 14) cirrals; longest cirrals with L/W ratio not more than 1.5; antepenultimate about as long as broad or broader; distal half of cirri wider than proximal half; cirrus length ~20% of arm length when that is about 35 mm. Arms to 50 mm long. P₁ of 15-32 segments; P₂ less than half as long with nearly half as many segments; P₃ genital, similar P₂.

Clark, A. H., Clark, A. M. (1967). A monograph of the existing crinoids. <em>Bulletin of the United States National Museum.</em> (82): 1-860.