|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Ophiuroidea - Encrinasteridae
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.
|J. A. Harper and R. W. Morris 1978||Small- to large-sized ophiuroids; ambulacral ossicles alternating, commonly with boot-shaped oral surfaces; adambulacral ossicles subventral, composed of heavy plates continuous in a radial direction, with broad oral surfaces, often bearing rows of pustules, and commonly with curved sutures producing rope-like twists; disc large, with well developed interrays, commonly bounded by stout frame of marginal ossicles; podia1 basins supported by ambulacrals and adambulacrals, tending toward size reduction laterally.|