|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Stenuroidea - Acinetasteridae
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.
|R. V. Kesling 1982||Brittle-star of the order Stenurida with five short, rapidly tapering arms and extensive interbrachial sectors without thickened marginal plates. Laterals subventral, broad and extended, abutting instead of imbricating, separated from ambulacrals by sublateral plates, rather firmly associated with thin plating of interbrachial sector. Sublaterals with submedian ridge articulating with ridges of ambulacrals and laterals. Disk not clearly set off from interbrachial sectors or arms, its integument papillose but without large ossicles or spines. madreporite aboral. Mouth small; mouth-angle plates high but fairly short.|