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)
G. Wienrich, 1999 - Die Fauna des marinen Miozäns von Kevelaer (Niederrhein). Band 2 Bivalvia, Scaphopoda, Cephalopoda, Bryozoa, Annelida, Brachiopoda - Backhuys Publishers, Leiden (2), 188-384 (serial monograph, German)
A. H. Cheetham, 1962 - Eocene bryozoa from the McBean Formation in Georgia - Micropaleontology (8), 323-336 (journal article, English)
T. A. Conrad, 1848 - Observations on the Eocene formations, and descriptions of one hundred and five new fossils from that period, from the vicinity of Vicksburg, Mississippi; with an appendix - Proceedings of the Academy of Natural Sciences of Philadelphia (3), 280-299 (journal article, English)