1. The Mesozoic pelecypods Otapiria Marwick and Lupherella Imlay, new genus, in the United States, Author/Creator: Imlay, Ralph W. 1908-1989. (Ralph Willard) Publication/Creation: Washington : U.S. Govt. Print. Off, 1967 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 573 A-D. Access & Availability: Loading