This mentioned taxonomy is an attempt to make an conclusive assignment from the different classifications of various scientists. Because the taxonomy may change due to the latest investigative methods and other findings, our map is a guide only.
J. J. Sepkoski, Jr., 2002 - A compendium of fossil marine animal genera - Bulletins of American Paleontology (363), 1-560 (serial monograph, English)
W. I. Ausich, 1998 - Phylogeny of Arenig to Caradoc crinoids (Phylum Echinodermata) and suprageneric classification of the Crinoidea - The University of Kansas Paleontological Contributions, n. s. (9), 1-36 (journal article, English)
G. H. Hudson, 1907 - On some Pelmatozoa from the Chazy Limestone of New York - New York State Museum Bulletin, Geology Papers (107), 97-127 (journal article, English)