|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
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.
|G. Ubaghs and R. A. Robison 1988||Eocrinoids with irregular multiplated
theca, lacking sutural pores or epispires.
Holdfast extremely reduced or possibly without attachment appendage. Ambulacral system confined to oral surface, consisting of an elongate mouth and ambulacra leading to probably five groups of generally two slender, unbranched, biserial brachioles. Anus, hydroporc, and gonopore unknown.