|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Holothuroidea - Etheridgellidae
It was assigned to Etheridgellidae by Hampton (1958), Deflandre-Rigaud (1962), Frizzell and Exline (1966) and Kozur and Sadeddin (1990); and to Arthrochirotida by Sepkoski (2002).
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. S. Hampton 1958||Imperforate, flat to concavo-convex plates (disks), with irregular hexagonal to subcircular outline and denticulate margin; surface ornamentation of minute granular projections.|