|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Ophiuroidea - Ophiurida - Ophiuridae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|H. Matsumoto 1915||Disk high, covered with plates and scales, among which the primaries are prominent. Radial shields stout, joined distally. Arm combs and genital papillse present. Oral shields oval or pyriform. Second oral tentacle pores open more or less, or entirely,outside oral slits, large, provided with numerous scales. Arms very short, very stout at base, higher than wide, rapidly tapering distally, with acute tip. Dorsal and ventral arm plates well developed, successive plates widely in contact with each other. Lateral arm plates high, with numerous arm spines, often unequal and arranged in two series. Tentacle pores large, with numerous scales.|