USGS professional paper · 1979 · 143 citations · 0 references
Natural SciencesEarth SciencesGeologyBiostratigraphyPaleoclimatologyStratigraphyCretaceous BiostratigraphyFacies AnalysisMicrofossil BiostratigraphyQuaternary StratigraphySedimentary Basin StratigraphyCambrian AnnelidsCambrian CnidariansTrilobite BiomineralizationTrilobite BiostratigraphyTrilobite EvolutionTrilobite MorphologyTrilobite Stratigraphic Range