...Everett C. Olson Abstract Aquatic moderately large amphibian, first report of genus from formation, skull and partial postcranium GeoRef, Copyright 2004, American Geological Institute. 1972 ...

...Robert R. Reisz; Michel Laurin Abstract The enigmatic synapsid Watongia , initially described on the basis of fragmentary remains from the Chickasha Formation of Oklahoma as an early therapsid (a gorgonopsian), is redescribed and is shown to represent the largest known varanopid synapsid. Its...

...Michel Laurin; Robert W. Hook Abstract The youngest Paleozoic vertebrate-bearing continental deposits of North America are Middle Permian (Guadalupian) in age and occur in the Chickasha Formation (El Reno Group) of central Oklahoma and the lithostratigraphically lower San Angelo Formation (Pease...

... northward to Kingfisher County and westward to Kiowa County. No unit comparable with the description of the “Chickasha formation” can be traced. South from Canadian County and east from Kiowa County, the Blaine and Dog Creek formations lose their identity through gradations. The equivalents of both...

...Spencer G. Lucas On the basis of their miscorrelation of the Chickasha Formation with the upper Kazanian, Reisz and Laurin (2001) concluded that the Mac ro let er from the Chickasha Formation “is the first evidence of the northern Dvinosaurid-Chroniosuchid province in North America...

...Figure 2. Permian stratigraphy showing relationships between the Pease River Group (shown in the center as rock units) and the caseid-varanopseid–dominated faunas. Stages and global standard series from Jin et al. (1997) . The age of the Chickasha Formation is poorly documented. Abbreviations: Fm...

... of lateral gradation in the Blaine and Duncan-Chickasha formations, and about the magnitude of unconformity at the base of the Marlow formation. These questions can be settled only in the field, and it is to be hoped that a conference can be arranged for the purpose of reconciling the divergent views...

...Fig. 1. —Chickasha-Blaine contact, NW. 1 4 , Sec. 29, T. 8 N., R. 7 W., Grady County. Sandstone in foreground, highly cross-bedded, light red in color, represents top of Chickasha formation. Shale above, maroon to deep red, is Blaine formation. ...

... in Late Permian time. In this article, we provide evidence that the holotype of Seymouria agilis ( Olson, 1980 ), a nearly complete skeleton from the Chickasha Formation of Oklahoma, is a misinterpreted reptile (parareptile sensu Laurin and Reisz, 1995 ), and that it belongs to Macroleter...

... has submitted valuable information regarding the local stratigraphy of the “purple” phase of the Chickasha formation. In order to understand more clearly the areal geology of the region, it will perhaps be well to first mention briefly the major structure of this part of Oklahoma...

... into six formations, named in ascending order, the Stillwater, Wellington, Garber, Hennessey, Duncan, and Chickasha. This paper, written as the result of a field conference in this region in March, 1926, describes these various formations and discusses their correlation. © 1926 American Association...

...Robert H. Dott In Oklahoma, shallow-water conditions prevailed during most of Permian time. Mudstone conglomerates are common in the Stillwater and Wellington formations; salt crystals developed on mud flats during Flower-pot and Dog Creek time. In the Chickasha facies of the Flower-pot...

... of Oklahoma, while the selenite-veined Flower-pot shales, 190 feet thick, have been called Chickasha in Oklahoma. The name “Nippewalla” is suggested for the group of formations lying between the Stone Corral and Blaine evaporites. Cragin’s “Cave Creek formation” is identical with the Blaine formation...