Supplementary Material for

This repository includes:All referenced figures (1 to 6);Text file supplementary_material.doc: additional information on the methods and results sections of the main text;Electronic supplementary material:Database S1: Complete database of global Diplodocoidea occurrences.RStudio_script: R script used to run all analyses and plot all images in this work.Table S1: First and last appearance datum for taxa considered in Figure 1.Table S2: Diplodocoidea occurrences starting dataset.Table S3: Diplodocoidea occurrences final dataset.Table S4: Parameters used to create stage-length time bins.Table S5: Parameters used to create nine Myr equal-length time bins.Table S6: Constrained Diplodocoidea occurrences dataset, using a stage-level time binning approach.Table S7: Unconstrained Diplodocoidea occurrences dataset, using a stage-level time binning approach.Table S8: Constrained Diplodocoidea occurrences dataset, using an equal-length (9 Myr) time binning approach.Table S9: Unconstrained Diplodocoidea occurrences dataset, using an equal-length (9 Myr) time binning approach.Table S10: Diplodocoidea occurrence counts per time bin, per clade and subclade; constrained dataset, stage-length time bins.Table S11: Diplodocoidea occurrence counts per time bin, per clade and subclade; unconstrained dataset, stage-length time bins.Table S12: Diplodocoidea occurrence counts per time bin, per clade and subclade; constrained dataset, equal-length (nine Myr) time bins.Table S13: Diplodocoidea occurrence counts per time bin, per clade and subclade; unconstrained dataset, equal-length (nine Myr) time bins.Table S14: Diplodocoidea raw taxonomic diversity at genus level, per clade and subclade; constrained dataset, stage-length time bins.Table S15: Diplodocoidea raw taxonomic diversity at genus level, per clade and subclade; unconstrained dataset, stage-length time bins.Table S16: Diplodocoidea raw taxonomic diversity at genus level, per clade and subclade; constrained dataset, equal-length (nine Myr) time bins.Table S17: Diplodocoidea raw taxonomic diversity at genus level, per clade and subclade; unconstrained dataset, equal-length (nine Myr) time bins.Table S18: Diplodocoidea SQS estimates; constrained dataset, stage-length time bins.Table S19: Diplodocoidea SQS estimates; unconstrained dataset, stage-length time bins.Table S20: Diplodocoidea SQS estimates; constrained dataset, equal-length (nine Myr) time bins.Table S21: Diplodocoidea SQS estimates; unconstrained dataset, equal-length (nine Myr) time bins.Tree S1: Topology used for the phylogeny in Figure 1.