1. A bibliographic index of North American late Paleozoic Hyolitha, Amphineura, Scaphopoda, and Gastropoda : an objective paleontologic compliation through 1966 extended from and including references in a similar index by Stuart Weller, 1898 Author/Creator: Yochelson, Ellis L. 1928-2006. (Ellis Leon) Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Resource Type: Book Is Part Of: U.S. Geological Survey bulletin, no. 1208-1210. Access & Availability: Loading