The Eocrinoidea were an extinct class of echinoderms that lived between the Early Cambrian and Late Silurian periods.

They were benthic suspension feeders, with five ambulacra on the upper surface, surrounding the mouth and extending into a number of narrow arms.

Kinzercystis Vyscystis Lepidocystis Felbabkacystis Lyracystis Akadocrinus Gogia Sinoeocrinus Ubaghsicystis Lichenoides Trachelocrinus Ridersia (derived Blastozoa) Note that some other sources use a more restricted definition of Eocrinidae,[11] or use the spelling Lichenoididae in place of Lichenoidae.

Kinzercystis Titanocrinus Aethocrinus Lyracystis Gogia Sinoeocrinus Akadocrinus Tatonkacystis Ubaghsicystis Dibrachicystis Pleurocystites Velieuxicystis Macrocystella Ridersia

Akadocrinus Cambrocrinus Ridersia Sanducystis Cystobsastus Lepadocystis Echinoencrinites Cheirocystella Macrocystella Rhombifera Lysocystites Macurdablastus Codaster Stephanocrinus Thomacystis Caryocrinites Hemicosmites