| Strimple H. L. (1948) Pleurocystites watkinsi, n. sp., from the Bromide Formation of Oklahoma, American Journal of Science 246 12, 761-764 doi:10.2475/ajs.246.12.761 |
| Bassler R. S. (1950) New genera of American Middle Ordovician "Cystoidea", Journal of the Washington Academy of Sciences 40 9, 273-277 |
| Strimple H. L. (1952) Two new species of Sinclairocystis, Journal of the Washington Academy of Sciences 42 5, 158-160 |
| Cooper G. A. (1956) Chazyan and related brachiopods, Smithsonian Miscellaneous Collections 127, 1-1245 |
| Reso A., Wegner K. (1964) Echinoderm (Holothurian?) sclerites from the Bromide formation (Black Riverian) of southern Oklahoma, Journal of Paleontology 38 1, 89-94 |
| Rigby J. K., Gutschick R. C. (1976) Two new Lower Paelozoic Hexactinellid sponges from Utah and Oklahoma, Journal of Paleontology 50 1, 79-85 |
| Frest T. J., Strimple H. L., et al (1979) Two new crinoids from the Ordovician of Virginia and Oklahoma, with notes on pinnulation in the Disparida, Journal of Paleontology 53, 399-415 |
| Sprinkle J. (1982) Palaeocystitids, Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma 11, 289-306 |
| Fay R. O., Graffham A. A., et al (1982) Previous studies of Bromide echinoderms, Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11, 34-44 |
| Sprinkle J. (1982) Echinoderm zones and faunas, Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11, 46-56 |
| Kolata D. R. (1982) Camerates, University of Kansas Paleontological Contributions, Monograph 1, 170-205 |
| Fay R. O., Graffham A. A. (1982) Biostratigraphic and paleontological studies, Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma: Lawrence, Kansas, University of Kansas Paleontological Institute Monograph 11, 30-33 |
| Sprinkle J. (1982) Cylindrical and globular rhombiferans, Echinoderm faunas from the Bromide Formation (Middle Ordovician) of Oklahoma 11, 231-273 |
| Sloan R. E., Webers G. F. (1987) Stratigraphic ranges of Middle and Late Ordovician Gastropoda and Monoplacophora of Minnesota, Middle and Late Ordovician lithostratigraphy and biostratigraphy of the Upper Mississippi Valley: Minnesota Geological Survey Report of Investigations 35, 183-186 |
| Rohr D. M., Johns R. A. (1990) First occurence of Oriostoma (Gastropoda) from the Middle Ordovician, Journal of Paleontology 64 5, 732-735 |
| Werts S. P., Cuffey R. J., et al (2001) Bryozoan species in the Chickasaw bryozoan reef (Ordovician, Oklahoma), Abstracts with Programs - Geological Society of America 33 5, 54-55 |
| Amati L., Westrop S. R. (2004) A systematic revision of Thaleops (Trilobita: Illaenidae) with new species from the middle and late Ordovician of Oklahoma and New York, Journal of Systematic Palaeontology 2 3, 207-256 |
| Rogalla N. S., Amler M. R. W. (2006) Revision der Familie Pseudobigaleaidae Hoare, Mapes & Yancey, 2002 (Mollusca; Rostroconchia), Paläontologische Zeitschrift 80 2, 167-208 |
| Amati L. (2014) Isoteline trilobites of the Viola Group (Ordovician: Oklahoma): systematics and stratigraphic occurrence, Oklahoma Geological Survey Bulletin 151, 1-125 |
