|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||Age range and collections|
Holothuroidea (sea cucumber)
It was reranked as the class Holothuroidea by Frizzell and Exline (1966), Barnes (1998), Boczarowski (2001) and Sepkoski (2002).
It was assigned to Echinozoa by Boczarowski (2001); and to Echinodermata by Frizzell and Exline (1966), Barnes (1998) and Sepkoski (2002).