Phylogeny of 4 ciliated anaerobic rumen protozoa inferred from small subunit ribosomal RNA sequence comparisons A. Sghir, J. Doré, L. Millet, D. David and P. HervéAnn. Zootech., 43 Suppl. 1 (1994) 24sDOI: https://doi.org/10.1051/animres:19940526