Echinodermata
Genus

Erinocystis Jaekel, 1899

https://files.geocollections.info/large/78/6b/786b99b5-6994-4dd9-8c2d-679f31bbb749.jpghttps://files.geocollections.info/large/c6/48/c648b839-dcf7-4e9a-8aaa-0b1919ed81c7.jpg
Selection of related publications
Regnéll, G. 1948. Echinoderms (hydrophoridae, ophiocistia) from the Ordovician (Upper Skiddavian) of the Oslo region. Norsk Geologisk Tidsskrift 27, 14-58.
Jaekel, O. 1899. Stammesgesihichte der Pelmatozoen. Erster Band. Thecoidea und Cystoidea. pp. 1-441. Verlag von Julius Springer.
References based on distribution