DOI: 10.5061/dryad.tk82cd1
title: Data from: Climate change and the latitudinal selectivity of ancient marine extinctions

description: Geologically rapid climate change is anticipated to increase extinction
 risk non-uniformly across the Earth’s surface. Tropical species may be
 more vulnerable than temperate species to current climate warming because
 of high tropical climate velocities and reduced seawater oxygen levels. To
 test if rapid warming indeed preferentially increased the extinction risk
 of tropical fossil taxa, we combine a robust statistical assessment of
 latitudinal extinction selectivity (LES) with the dominant views on
 climate change occurring at ancient extinction crises. Using a global
 dataset of marine fossil occurrences, we assess extinction rates for
 tropical and temperate genera, applying log-ratios to assess effect size
 and Akaike weights for model support. Among the classical ‘Big Five’ mass
 extinction episodes, the end-Permian mass extinction exhibits temperate
 preference of extinctions, whereas the Late Devonian and end-Triassic
 selectively hit tropical genera. Simple links between the inferred
 direction of climate change and LES are idiosyncratic, both during crisis
 and background intervals. More complex models, including sampling patterns
 and changes in the latitudinal distribution of continental shelf area,
 show tropical LES to be generally associated with raised tropical heat and
 temperate LES with global cold temperatures. With implications for the
 future, our paper demonstrates the consistency of high tropical
 temperatures, habitat loss and the capacity of both to interact in
 generating geographic patterns in extinctions.
description: Post-Cambrian
 Phanerozoic raw occurrencesThis is the raw
 occurrence dataset used for analyses, downloaded from the Paleobiology
 Database (http://www.paleobiodb.org/) on 18th December
 ‎2017pbdb_dataPhanMarine.slim.csvGeological stage boundaries for analysisThese give the temporal bins that the occrrence and environmental data were binned into.stages_2012PBDB.csvOverall extinction ratesThis file contains 100 subsampled iterations for the overall extinction rates to plot a basic version of Figure 1. Use with 'TimeBinningCode.R'TOT.ext.subs100.2f3.csvTropical and temperate genus extinction ratesThis file contains 100 subsampled iterations for the tropical and temperate affinity genera extinction rates to plot a basic version of Figure 1. Use with 'TimeBinningCode.R'temptrop.ext.aff.ALLPhan100.0.1.Fixedat30.csvR code for time binning and Figure 1This code allows for binning of the raw data as in the analysis to some substage levels, then allows reading in of the original pre-calculated extinction rates for the Phanerozoic, and allows a basic version of Figure 1 to be plotted. To perform the exact analyses, the reader is directed to the URL home of the R package divDyn.TimeBinningCode.RAppendix: Supplementary methods and results.This zip archive contains a PDF file that includes supplementary methodological details, and details and results of sensitivity and exploratory analyses that support the manuscript. It includes figures S1 to S9 and tables S1 to S3. Tables S1 to S3 are also included in .csv format to facilitate use.Reddin_et_al_2018_Paleobiology_Appendix.zip