This is a preview. Log in through your library . Abstract The occurrence in central Montana of a small fauna of three genera and species diagnostic of the Bellefontia zone is recorded. All are species ...

Nikitina, O. I., Popov, L. E., Neuman, R. B., Bassett, M. G., and Holmer, L. E. 2006. "Mid Ordovician (Darriwilian) brachiopods of South Kazakhstan." In Studies in ...