Analysis of variance comparing the number of laminae and number of cell classes in the tectum of type 1 (��laminar brains��) and type 2 (��elaborate brains��) species, as classified by Butler and Hodos (ref. [1]).

Critical values for F statistics and associated significance levels are presented for conventional tabular values (harmonic interpolation [26])�Cwhich would be appropriate only if the traits did not present a significant phylogenetic signal (see table 2) �C, as well as based on analyses of data simulated along the phylogeny shown in figure 1 under a bounded Ornstein-Uhlenbeck model of trait change. The parameters for the OU model can be found in Table S1. See text for more information.本文提供了常规表格值（谐波插值[26]）下的F统计量临界值及对应显著性水平——该类常规表格值仅适用于性状未表现出显著系统发育信号的场景（详见表2）——同时还提供了基于图1所示系统发育树、在性状演化的有界奥恩斯坦-乌伦贝克（Ornstein-Uhlenbeck）模型下模拟生成数据的分析结果。奥恩斯坦-乌伦贝克模型的参数详见附表S1。更多细节请参见正文。