McINTYRE, D.J., & W.W. BRIDEAUX 1980 Valanginian miospore and microplankton assemblages from the Northern Richardson Mountains, District of Mackenzie, Canada Geological Survey of Canada, Bulletin 320: 1-57, 1 fig., 4 tables, 12 pls. Apteodinium apiatum, Apteodinium spongiosum, Millioudodinium saetigerum, Millioudodinium spinoreticulateum, Palaeostomocystis senilis, Cleistosphaeridium separatum, Cleistosphaeridium spissum, Ctenidodinium scissum, Gochteodinia judilentinae and Kallosphaeridium agglutinatum