Supplementary Materials from A new stem group echinoid from the Triassic of China leads to a revised macroevolutionary history of echinoids during the end-Permian mass extinction Jeffrey R. Thompson Shi-xue Hu Qi-Yue Zhang Elizabeth Petsios Laura J. Cotton Jin-Yuan Huang Chang-yong Zhou Wen Wen David J. Bottjer 10.6084/m9.figshare.5802681.v1 https://rs.figshare.com/articles/journal_contribution/Supplementary_Materials_from_A_new_stem_group_echinoid_from_the_Triassic_of_China_leads_to_a_revised_macroevolutionary_history_of_echinoids_during_the_end-Permian_mass_extinction/5802681 This includes the Geological Setting, details of the Character Scoring, MCMC, and Sensitivity Analyses, and Supplementary Figures and Figure Captions 2018-01-19 12:32:51 sea urchin Triassic Lazarus effect echinoderm Luoping Biota