C. E., Decker and C. A., Merritt: The stratigraphy and physical characteristics of the Simpson Group, Bulletin of the Oklahoma Geological Survey, 55, 1-112, 1931.
R. O., Fay, A., Grafham and J., Sprinkle: Measured sections and sampling localities
In (Ed.), Echinoderm faunas from the Bromide Formation (middle Ordovician) of OklahomaUniversity of Kansas Paleontologieal Contributions, Monograph1: 345–369., 1982.
Y., Grahn and M. A., Miller: Chitinozoa from the middle Ordovician Bromide Formation. Arbuckle Mountains, Oklahoma. U.S.A, Neues Jahrbuch für Geologie und Paläontologie, Abhandlungen, Abteilung B, 172, 381-403, 1986.
A. L., Guber and V., Jaanusson: Ordovician ostracodes with posterior domiciliar dimorphism, Bulletin of the Geological Institutions of the University of Uppsala, 43, 1-43, 1964.
R. W., Harris: Description of Microfauna
In The stratigraphy and physical characteristics of the Simpson GroupBulletin of the Oklahoma Geological Survey55: 87–95., 1931.
R. W., Harris: Ostracoda from the Simpson Group, Bulletin of the Oklahoma Geological Survey, 75, 1-333, 1957.
T. R., Jones: Notes on the Palaeozoic Bivalved Entomostraca. No 4. Some North American Species, Annals and Magazine of Natural History, series 3, 1, 241-257, 1858.
T. R., Jones and H. B., Holl: Notes on the Palaeozoic Bivalved Entomostraca. No. 8. Some Lower-Silurian Species from the Chair of Kildare, Ireland, Annals and Magazine of Natural History, series 4, 2, 54-62, 1868.
G. M., Kay: Ordovician Mohawkian Ostracoda, lower Trenton Decorah Fauna, Journal of Paleontology, 14, 234-269, 1940.
J. C., Kraft: Morphologic and systematic relationships of some Middle Ordovician Ostracoda. Geological Society of America, Memoir, 86, 1-104, 1962.
S. A., Levinson: New genera and species of Bromide (middle Ordovician) ostracodes of Oklahoma, Micropaleontology, 7, 359-364, 1961.
M. W., Longman: Depositional history, paleoecology and diagenesis of the Bromide Formation (Ordovician), Arbuckle MountainsOklahomaPhD thesisUniversity of TexasUSA., 1976.
M. W., Longman: Depostion of the Bromide Formation, Arbuckle Mountains, Oklahoma: ontogeny of an ancient carbonate shell, Shale Shaker, 32, 1-18, 1981.
M. W., Longman: Depositional environments
In (Ed.)Echinoderm faunas from the Bromide Formation (middle Ordovician) of OklahomaUniversity of Kansas Paleontological Contributions, Monograph, 1: 17–30., 1982.
A., Martinsson: The primitiopsid ostracodes from the Ordovician of Oklahoma and the systematics of the Family Primitiopsidae, Bulletins of the Geological Institution of the University of Uppsala, 36, 79-105, 1960.
R. J., Ross: The Ordovician System in the United States correlation chart and explanatory notes, International Union of Geological Sciences Publication, 12, 1-73, 1982.
N. S., Shalski: The Great Donets Basin and the Wichita System: Comparative tectonics of ancient platforms, Izvestiya Akademii Nauk SSSR, Seriya Geologischeskaya, 6, 57-90, 1946.
D. J., Siveter: Habitats and modes of life of Silurian ostracodes
In (Ed.)Autecology of Silurian organismsSpecial Papers in Palaeontology, 32: 71–85., 1984.
W. C., Sweet: Graphic correlation of upper middle and upper Ordovician rocksNorth American Midcontinent Province, U.S.A
In (Ed.), Aspects of the Ordovician SystemPalaeontological Contributions from the University of Oslo, 295: 23–35., 1984.
W. C., Sweet and S., Bergström: Conodont biostratigraphy of the middle and upper Ordovician of the United States Midcontinent
In (Ed.)The Ordovician SystemUniversity of Wales Press and the National Museum of Wales, 121–151., 1976.
E. O., Ulrich: New Lower Silurian Ostracoda, No. 1, American Geologist, 10, 263-270, 1892.
E. O., Ulrich: The Lower Silurian Ostracoda of Minnesota, Geological and Natural History Survey of Minnesota, 3, 629-693, 1894.
M., Williams: Ostracoda (Arthropoda) of the middle Ordovician Simpson Group, Oklahoma, USAPhD thesis, University of Leicester, UK., 1990.
M., Williams and J. M. C., Vannier: Middle Ordovician Aparchitidae and Schmidtellidae: the significance of ‘featureless’ ostracods, Journal of Micropalaeontology, 14, 7-24, 1995.
