Deep-time Biodiversity Patterns and the Dinosaurian Fossil Record of the Late Cretaceous Western Interior, North America Susannah C. R. Maidment1,3, Christopher D. Dean1, Robert I. Mansergh1,2, Richard J. Butler3 1Department of Earth Sciences, Natural History Museum, Cromwell Road, London SW7 5BD, United Kingdom; susannah.maidment@nhm.ac.uk; christopher.dean@nhm.ac.uk; 2Department of Earth Sciences, 5 Gower Place, London WC1E 6BS; robert.mansergh.20@ucl.ac.uk; 3School of Geography, Earth and Environmental Sciences, University of Birmingham, Edgbaston, Birmingham B15 2TT, United Kingdom; r.butler.1@bham.ac.uk. Folder OSM raw data: containing raw data for quantitative analyses. Sources of this data can be found in the manuscript. 1. GLS analyses. Contains two raw data files for GLS analyses. 2. Occurrences and Collections. Contains data for analyses examining correlations between dinosaur occurrences and collections. a. Ceratopsidae_Campanian_Occurrences - occurrence data for Campanian ceratopsids b. Ceratopsidae_Maastrichtian_Occurrences - as above but for Maastrichtian ceratopsids c. Hadrosauridae_Campanian_Occurrences - as above but for Campanian hadrosaurs d. Hadrosauridae_Maastrichtian_Occurrences - as above but for Maastrichtian hadrosaurs e. Dinosauria_Campanian_Collections - collections data for Campanian dinosaurs f. Dinosauria_Maastrictian_Collections - as above for Maastrichtian dinosaurs g. Tetrapoda_Campanian_Collections - as above for all Campanian tetrapods h. Tetrapoda_Maastrichtian_Collections - as above for all Maastrictian tetrapods 3. Supertrees and stratigraphic and geographic data. Contains input files for pBC analyses. a. Cera_Campanian_ranges - geographic ranges of Campanian ceratopsids b. Cera_Maastrichtian_ranges - geographic ranges of Maastrichtian ceratopsids c. ceratopsian_FADLAD - stratigraphic ranges of ceratopsids d. ceratopsian_supertree - ceratopsid supertree used in analysis in newick format e. Had_Campanian_ranges - geographic ranges of Campanian hadrosaurs f. Had_Maastrichtian_ranges - geographic ranges of Maastrichtian hadrosaurs g. hadrosaur_FADLAD - stratigraphic ranges of hadrosaurs h. hadrosaur_supertree - hadrosaur supertree used in analysis in newick format Folder OSM code: containing R code for quantitative analyses a. GLS_Analysis - code for GLS analysis (author RJB & CDD) b. LevelPlotData_Setup - code to set up level plots to generate data to input into GLS analysis. (author CDD) c. LevelPlotData_Setup_Continued - code to set up level plots to generate data to input into GLS analysis. (author CDD) d. LevelPlot.Figures - code to produce level plots figures (author CDD) e. Levelplot.Functions - code defining functions used to make level plots to generate data to input into GLS analysis. (author CDD) f. pBC code - code to run phylogenetically-corrected Biogeographic Connectedness (author RJB) g. pBC_sampling - code for rarefaction analyses (author RJB) h. pBC_test - code to sub-sample Maastrichtian data to Campanian sampling levels (author CDD) i. SamplingBias_code - code to examine correlations between occurrences and collections. (author SCRM)