1. Teiichispira, a new early Ordovician gastropod genus, Author/Creator: Yochelson, Ellis L. 1928-2006. (Ellis Leon) Publication/Creation: Washington : U.S. Govt. Print. Off, 1968 Resource Type: Book Is Part Of: U.S. Geological Survey professional paper, no. 611-614. Access & Availability: Loading
2. Teiichispira, a new early Ordovician gastropod genus Author/Creator: Yochelson, Ellis L. 1928-2006, (Ellis Leon), author Publication/Creation: Washington : United States Department of the Interior, Geological Survey, 1968 Resource Type: Book Access & Availability: Loading