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.
M. A. Pagani, 2000 - Bivalvos del Permico inferior de la Formacion Bonete, Sierras Australes (provincia de Buenos Aires, Argentina) - Ameghiniana (37), 301-320 (journal article, Spanish)
N. J. Morris, 1991 - Upper Palaeozoic Anomalodesmatan Bivalvia - Bulletin of the British Museum of Natural History (47), 51-100 (journal article, English)
H. J. Harrington, 1955 - The Permian Eurydesma fauna of eastern Argentina - Journal of Paleontology (29), 112-128 (journal article, English)
P.F.P.C. Devonshire, 1955 - A faunal study of the Pumpkin Creek Limestone Member of the Big Branch Formation in the Ardmore Area - Shale Shaker Digest, Oklahoma Geological Society (), 314-327 (book/book chapter, English)
J. C. Walter, 1953 - Paleontology of Rustler Formation, Culberson County, Texas - Journal of Paleontology (27), 679-702 (journal article, )
F. R. C. Reed, 1944 - Brachiopoda and Mollusca from the Productus limestones of the Salt Range - Palaeontogica Indica, Memoirs of the Geological Survey of India, New Series (23), 1-596 (serial monograph, English)
N. D. Newell, 1940 - Invertebrate fauna of the late Permian Whitehorse Sandstone - Geological Society of America Bulletin (51), 261-335 (journal article, English)
M. M. Ogilvie Gordon, 1927 - Das Grödener-, Fassa- und Enneberggebiet in den Südtiroler Dolomiten: Geologische Beschreibung mit besonderer Berücksichtigung der Überschiebungserscheinungen. Teil III. Paläontologie - Abhandlungen der Geologischen Bundesanstalt (24), 1-88 (journal article, German)
J. W. Beede, 1907 - Invertebrate paleontology of the Upper Permian Red Beds of Oklahoma and the panhandle of Texas - Kansas University Science Bulletin (4), 113-1171 (journal article, English)
G. Fliegel, 1901 - Uber obercarbonische Faunen aus Ost-und Sud-asien - Palaeontographica (48), 91-136 (journal article, English)
A. Bittner, 1901 - Lamellibranchiaten aus der Trias von Hudiklanec nächst Loitsch in Krain - Jahrbuch der Kaiserlich-Königlichen Geologischen Reichsanstalt (51), 225-234 (journal article, German)
W. Waagen, 1881 - Productus Limestone Fossils, Part III - Salt Range Fossils, Palaeontologia Indica, Series 13 (1), 185-328 (serial monograph, English)
F. Roemer, 1880 - Über eine Kohlenkalk-Fauna der Westküste von Sumatra - Palaeontographica (27), 1-11 (journal article, German)
F. B. Meek, 1869 - Descriptions of New Carboniferous Fossils from the Western States - Proceedings of the Academy of Natural Sciences of Philadelphia (21), 137-172 (journal article, English)
F. B. Meek, 1858 - Remarks oon the Lower Cretaceous beds of Kansas and Nebraska, together with descriptions of some new species of Carboniferous fossils from the valley of Kansas River - Proceedings of the Academy of Natural Sciences, Philadelphia (1858), 256-264 (journal article, English)
W. King, 1844 - On a new genus of Paleozoic shells - Annual Magazine of Natural History (14), 313-317 (journal article, )