|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Holothuroidea - Dendrochirotida - Calclamnidae
It was assigned to Calclamnidae by Summerson and Campbell (1958), Deflandre-Rigaud (1962) and Frizzell and Exline (1966); and to Dendrochirotida 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.
|C. H. Summerson and L. J. Campbell 1958||Sclerites in form of large, flat perforate plates of varied outline and characterized by a spinose border. In some forms the spines are developed only peripherally; in others, they are recognizable as thickened or raised walls for some distance in toward the center of the plate. The general appearance is of a plate strengthened by radial supports. Perforations vary in size and arrangement; margins between the spines may be smooth or irregular; maximum known length of spines beyond margins, 0.25 mm.|