1. Nonmarine ostracodes in the Lakota Formation (Lower Cretaceous) from South Dakota and Wyoming Author/Creator: Sohn, I. G. 1911-2000, (Israel Gregory), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1979 Resource Type: Book Access & Availability: Loading
2. Nonmarine ostracodes in the Lakota Formation (Lower Cretaceous) from South Dakota and Wyoming : revision of nonmarine Lower Cretaceous ostracode genera from the Black Hills, and description of two new genera and four new species : on the basis of this revision, the Lakota Formation is considered to be pre-Aptian in age Author/Creator: Sohn, I. G. 1911-2000. (Israel Gregory) Publication/Creation: Washington : U.S. Govt. Print. Off, 1979 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 1067-1072. Access & Availability: Loading
3. Nonmarine ostracodes of Early Cretaceous age : from Pine Valley quadrangle, Nevada, Author/Creator: Sohn, I. G. 1911-2000. (Israel Gregory) Publication/Creation: Washington : U.S. Govt. Print. Off, 1969 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 642-644. Access & Availability: Loading
4. Nonmarine ostracodes of Early Cretaceous age from Pine Valley quadrangle, Nevada Author/Creator: Sohn, I. G. 1911-2000, (Israel Gregory), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1969 Resource Type: Book Access & Availability: Loading