American Journal of Science · 1969 · 76 citations · 0 references
Natural SciencesEarth SciencesPhycologyStratigraphySystematic PaleontologyAlgal SystematicsQuaternary StratigraphyStratigraphic ClassificationStratigraphic CorrelationStratigraphic FrameworksStratigraphic UnitsHigh-resolution StratigraphyPaleoceanographic StratigraphyStratigraphic Records
Algal structures, four supergroups (Conophytonida, Kussiellida, Tungussida, Gymnosolenida), criteria for stratigraphy-correlation, USSR