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Stratigraphic chart of the lower Permian (partial) Content updated October 16, 2005
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RICHARDS SPUR UNIDENTIFIED CASEASAUR References
Chronological Langston W., Jr. (1965) "Oedaleops Campi (Reptilia: Pelycosauria), a new genus and species from the Lower Permian of New Mexico, and the family Eothyrididae". Bulletin of the Texas Memorial Museum, 9: 5 - 47 E. C. Olson (1968) "The family Caseidae". Fieldiana, Geol., 17 (3): 223 - 349 D. Sigogneau-Russell, D.E. Russell (1974) "Etude du premier Caseide (Reptilia Pelycosauria) d'Europe occidentale". Bulletin du Museum National D'Histoire Naturelle 3e serie, n° 230: 145 - 205 C. Sullivan, R.R. Reisz (1999) "First Record of Seymouria (Vertebrata: Seymouriamorpha) from early Permian fissure fills at Richards Spur, Oklahoma". Canadian Journal of Earth Sciences 36: 1257 - 1266
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